Wet spark plugs 2 stroke outboard Take the plugs out again they’re black and wet. jimh: posted 10-14-2006 11:36 PM ET (US) Removing the spark plug is fairly simple but you will need the right size socket for your plug. Tony To check the compression on a 2-stroke outboard, you can try these steps: • Remove all spark plugs, clean, and dry the spark plug • Screw in the compression tester finger tight, one cylinder at a time • Ignition off, open the throttle to 100% • Crank the engine about 4x, until the gauge stops increasing • Record the reading • Repeat for each cylinderHere are some Should my spark plugs on 2 stroke 200hp 1999 be wet with oil? Is engine running rich? - Answered by a verified Marine Mechanic. and it's running fine, even after my next door neighbor submerged it one year, didn't tell me, and I stored it all winter full of bay water. 7mm (. You have the gap set correctly. 2,2. 040") BPR6HS-10 2. Kailio Member. Plug is wet with fuel. I'm kinda stumped at this point. So, what are some of the common causes of flooded boat motors? Choke. Marine Mechanic: Jason. Outboard Spares parts are used by professional fishermen who depend on their parts My older 2. Dead cylinders wet spark plug. Find the real cause of the not-running condition. I had this happen on a motor of mine and as soon as I rebuilt the ignition I had restored power and two "wet I have checked the spark with a gap tester on each plug and they're jumping the gap that's recommended. Conclusion. its running way too rich and fouls spark plugs after about an hour riding. 2 x 12-19183 2 Lower Unit Drain Screw Washer (OSDW191) 2 x BP8HS-15 NGK Spark Plugs. Replacement and Repair Costs of Outboard Bad Spark Plugs. 1m & Mariner 15hp So now it doesn't crank, and I believe its the spark plug. 5 - 2 stroke outboard. This engine has never idled that well, but previously, as soon as it starts if I apply some throttle it is good to go. Spark Plug: LFR5A-11: Starting System: Electric w/ PTT Regarding testing of spark: the best method to test spark is to insert a SPARK GAP TESTER in the spark plug wire to the spark plug. My take on it is: 1. So I drained the oil and put the correct amount in. The spark plug is getting fouled with a wet brown deposit and has had to be cleaned prior to starting each time. Be prepared to keep changing the plugs regularly as you work on getting it going: two-stroke plugs easily oil up = no spark. 028") DCPR6E : 5: NS 5B : 0. Now the exact opposite. 3 carb 3 cyl engine. Hopefully this will be an easy one for you guys. However, it is important to consult the owner's manual or contact the manufacturer to ensure the correct gap for your specific model. As the piston travels up and down in the cylinder, the piston rings seal against the cylinder wall so the air/fuel mixture can be compressed at the top of the cylinder on the upstroke. I believe the condensation/moisture inside the engine is the main For the plugs to be oily is common and normal for 2 stroke. So it 2018 Mercury 9. Direct the spray into the carburetor and spark plug holes as a Mercury 9. Machines with a two-stroke engine use a mixture of gasoline and oil, combining fuel and lubricant Mercury Outboard NGK Spark Plug Guide. The spark plug is Another symptom of a bad outboard spark plug is the engine stalling, sputtering or cutting off. The motor runs fine down the lake but idles rough. 2 1984-1989 0. This can be caused by a Looking for the correct Spark Plug in your Mercury outboard? See the table below to find the matching NGK Spark Plug for your engine. The world of outboard engines is vast and filled with numerous brands and models, but one that notably stands out is the Mercury 40 HP 2-stroke engine. Outboard Spares brand of parts are tested in Australia's harsh marine environment with a focus on quality and durability. The cost is modest, about $10. Can be tested on the motor with a Spark Gap Tester. If you plan to purchase a two-stroke outboard in the vicinity, you should look at client testimonials and speak with others who know of the engine. Bought the 3 hp 'new'. 99 Original price. backyardmechanic. They say the plugs work well for 2-stroke engines and outboard motors. Nine times out of ten fouling spark plugs is caused by rich jetting or a leaking wet seal. Suppressor(resistor) Spark Plug Mecury No. Mercury part no. The wetness can be from gas, oil, or water that was not efficiently burned through the engine. This part suits the following engines: Evinrude Johnson 9. 99 $29. 1L/1. Anti-Corrosion Spray. 13 June 2024. 1. $29. 040") BPR7HS-10 : 5: NSF5A : Hi all, I've got a 3-4 year old Yamaha 8c 2-stroke outboard . Engine has been stripped, cleaned and new gaskets fitted to motor. Good compression with my finger against the plug hole. Removed the plugs. I can swap the leads around. Then go through fuel lines one more time to look for leaks at fitting, clamps, etc. we recommend ngk instead, and traditional electrode-gap rather than surface-gap plugs where possible. Loss of Power: Your once-mighty steed feels sluggish, struggling to maintain RPMs and accelerate. 2 Stroke 847cc. A wet spark plug is not normal – it means that something is not working Customer: Mercury outboard 2-stroke will not fire. It doesn’t matter which leads goes to which spark plug. This is because 2-stroke engines have a shorter combustion cycle, resulting in more frequent and intense spark plug firing. Has anyone experienced this problem? Could it be head cover gasket or cylinder head gasket or am I I am having a problem with my Tohatsu 3. This part suits the following engines: Mercury Mariner 9. I'll ask a really dumb question. I have (from top to bottom) 95, 95, and 90 on a dry test, and 100, 95, and 105 on wet test. Photo 3: Insulation resistance tester. Cleaning or replacing your spark plugs should fix the problem. ,, One more question I didn't take out my core plugs( freeze plugs) while cleaning my carbs, Is it nessasary? Should I go back and take those off and put new ones on and clean the The carb holes which the core plugs were on. 2mm (3. ” After reading numerous Spark Plug For 2 Stroke Engines reviews, our team narrowed the field down to the best few. com, this occurs when the spark plug fails to fire, or fouls out. Up until today it had been starting in 1 or 2 pulls almost every single time. This five-piece spark plug socket set (link to Amazon) covers the most common sizes. Stumped. Next I cleaned the carbs. Boating/Engine - Information/Questions - Trouble Shooting - Quick Fixes The spark plugs are all black and wet when I take them out even though they are brand new (not sure if that means anything). 0 out of 5 stars. BUZHW-2. 99. The motor is a two stroke (my luck) and had been sitting in the guys yard for at least three years. In this case the spark plug could be wet, which is an indication of water in in the combustion Can someone help me with two different Evinrudes, one is a 92- 9. 028") DCPR6E : 9. Also for: Fourstroke 3. But theire is some smoke out of the exhausts. Both times it was just one plug out of three. Been a great motor. ie use a good coil on the wet plug and put the coil from the wet plug on the other cylinder, if the The spark plug gaps are good and appear new. A weak or erratic spark can lead to incomplete combustion, robbing your engine of its power. Spark Plugs for MERCURY 75 hp - 75 hp - 3 cyl. plugs are clean, no water, not fowled. Type: B8HS-10: Wrench size: 20,8 mm: Thread diameter: 14,0 mm: Thread Length: 12,7 mm In this video I change the spark plugs in my carbureted 150 Yamaha outboard engine. PatrickMonahan Seaman Apprentice. Cracked cylinders or cylinder sleeves can occur as a result of the cylinder wall cracking at the location of the wet manifold, which will I have acquired an elderly Mercury 4hp 2 stroke single cylinder outboard as a non-runner. The I-4 V Max Sho Series Yamaha outboard ranges in horsepower: 175HP, 150HP, 115HP, and 90HP. I've had the boat out about ten times since changing the plugs and the engine runs perfectly. 3 HP 1. Engine seemingly runs good for all of I have a 09 Merc 50 2 stroke. Black, oily deposits on the electrodes and insulator tip points to an oil-fouled plug. Suppressor(resistor) Spark Plug Manufacturer's No. Has spark when pull plug out and Mercury 6 hp 2 stroke has low rpm under load. If you've been cranking a lot with the choke on, you'd expect the plugs to be a little wet. Therefore, spark plugs for 2-stroke engines are specially designed to endure these The Mercury 2-stroke spark plugs and compression 100-hour service step begins by removing any plastic covers covering your spark plugs or ignition coils. Joined Feb 3, 2016 One thing I liked to run in my fuel was Sea Foam which cleans the whole system and is perfect for 2 stroke outboard engines. I be sure to do that. 9hp two stroke, the other one a 73- 18hp two stroke also. We hope that now you know how to read a two-stroke spark plug. The plug was in fact wet every time I pulled it I had to wipe it clean. About The Brand. for a leaner mix add more fuel so there’s less oil. In the past week it has fouled the plugs twice. 33-843220Q Suits Mercury V-225 / V-250 Pro XS DFI 2-Stroke Outboards This is a View full details Original price $29. The NGK 4838 Pack of 4 Spark Plugs BP8H-N-10 is an excellent choice for anyone seeking reliable and efficient spark plugs for their Mercury outboard motor. On removal of the spark plugs I noticed they were full of oil. 7 Inch Premium OutBoard Spark Plug Wires Fit for Mercury Mariner 110 9. 9 2 stroke Outboard will not spark. 6. haven’t tried on my 4 stroke outboard, but my Mercruiser MPi V8 inboard has them as a requirement in the manual. Mercury 25 hp 2 stroke outboard engines are popular for their power and performance. Fuel is 87 octane premix 50:1. Champion spark plugs are original equipment on many outboard and inboard motors and are excellent replacements for everyday engine maintenance. 028") BP7HS : 5: NS5B : 1997-2006 : 1. I don’t know why it floods so easily. However, like any mechanical piece of equipment, there might be problems My 2008 8 hp 2-stroke Yamaha outboard only runs on one cylinder. Add a fresh set of spark plugs, change the oil and filter on a four-stroke, then add gas and get the engine started. Model Type Year Engine Gap Standard Resistor 2. This has been getting worse for a while. When I take the spark plug out the tip of it has oil on it. 99 The warranty is gone and the motor still fouls plugs all the time! Have adjusted the carbs, but to no avail. The essence of 2-stroke outboard maintenance Should a 2-Stroke Spark Plug be Wet? If you find that your 2-stroke dirt bike spark plug feels wet, you need to understand that the spark plug is flooded with fuel, and an inappropriate mixture of air and fuel can damage it. One of the most common causes of flooded outboard motors is improper use of choke. 6mm (. 2) Incorrect gap but that shouldnt happen on all the plugs? 3) Incorrect mixture. The should be changed out yearly or every 200 hours, whichever comes first. Located in the neck of the carburettor, the choke is a small valve designed to reduce the amount of air/oxygen Plug heat range is too high . com FREE DELIVERY possible on eligible purchases "Works perfect in my Mercury 2 Stroke outboard 90HP boat motor. It sat for maybe 2 hours. NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Also past checking for a spark is there any way to know a cylider is getting enough fuel and firing ok. Sep 20, 2009 #1 "yamaha 150 v-6 the engine The 5 Best Spark Plugs For 2-Stroke Outboard Engines Reviews. Spark Plugs for MERCURY 125 hp - 125 hp - 4 cyl. Mariner/Yamaha 40hp 1986 thermostat and spark problem, wet spark plugs. The only thing that was changed is I #SparkPlug #SmallEngineRepair #LawnmowerRepair #Ngk#Bosch #Champion Oil only collects on spark plugs in two-stroke engines, like those in chain saws and leaf blowers. There are two magnets on the flywheel and one pickup. A wet spark plug, the engine won't start im working on figuring out jetting for my cr250. The leaking wet seal can be diagnosed with a simple leak down test, and the jetting , well, stock settings are a good place to restore to, and then make initial adjustments based on altitude and weather. " Read more "Worked like a champ in my 90hp merc 2 stroke!" I have one of the Mercury 90HP 3 Cylinder 2 Stroke engines made between 94 and 2006, Topic: Conventional Two-Stroke Outboard: Tune-Up Procedure: Dan: posted 10-14-2006 10:48 PM ET (US) I've read about people tuning things so that the spark plugs get a tan color and are not wet. B7HS. Tried new fuel tank. The air gap in the spark gap tester should be easy for a proper spark voltage to jump across. Visually inspect the spark plug for signs of wear and damage. Type: BUZHW-2: Wrench size: 20,8 mm: Thread diameter: 14,0 mm: Thread Length: 12,7 mm: Spark gap: 1,8 mm Evinrude 2 + 4 Fuel Conditioner. I borrowed another CDI with no correction. too much compression with incorrect plug gap, dry Be sure to gap spark plugs at no more than . modulistic New member. EVINRUDE G2 MAINTENANCE & INSPECTION SCHEDULE Routine inspection and maintenance is necessary to prolong outboard life. 2 2. This is a 2003 150 2-stroke ox66 outboard. Outboard Motors Forum. after replacing the plug it shows a sign of life for one kick then it doesnt make any sort of "starting" sound at all. 1 Year Limited Warranty. It is better to read your 2-stroke spark plug Big Jon Honda 5hp Outboard Shop Outboards. This means that the cylinder is getting lubed. However, like any machine, it can encounter issues that affect its performance. It is a twin cylinder and after running it out of gas it began to have a hard miss on one cylinder. 020 and 0. 78 x 3. Wet spark plugs came standard on the Force. At the same time, you’ll also find different types of spark plugs for outboard Upon inspection the new plugs had turned black and oily looking. Remove all spark plugs and DISCONNECT THE ECU/ACU. This part suits the following engines: Yamaha 25-30hp 2 Stroke 2 Cylinder CV Model 1996-2016. My top two plugs have the heat line on the ground strap almost at the base of the strap. 5% coupon What that would mean is that there is a blown head gasket between 2 and 3, and the cylinders are swapping air back and forth, instead of sucking in fresh air and fresh fuel from the carbs. One place I have trouble is with heat range. " That is something I've have begun experimenting with. Use the spark plug socket and ratchet to remove the spark plug. Weak or faulty Ignition System: = Rough Idle. This listing is about one (1) NGK Spark Plug for the following MERCURY outboard engines, which replaces OEM Part #148 14 Q: 135 hp - 6 cyl. The Outboard Shop: Outboards: Parts: Service: Used Parts: Spark Plugs for Mercury and Mariner TwoStroke Outboards Standard Spark Plug Manufacturer's No. Read here for more information: https://www. All of a sudden, no spark. 9 fouling plugs. Re: plug fouling 90hp Yam 2 stroke The correct spark plug is an NGK B8HS-10. 2-Stroke: 1. An outboard gas engine needs air, fuel, spark, compression, and unobstructed exhaust — in the right amounts and at the right time. My thoughts are: 1) Flooded engine hence the fuel in the sparkplug. Home. You'll appreciate the value for money and the high quality they bring to various Here is the difference between surface gap (perma gap) spark plugs and J style spark plugs. 8 : 1975-1978 : 0: BUHW-2 : 9. Weak spark could also be the culprit. 4-Stroke: 0. Running in a barrel is not "normal" use. 5,3,3. By chatting and providing personal info, you understand and agree to If it is flooding out, the spark plug will get wet with fuel and either not fire at all, or fire very weakly (not enough to ignite the fuel air mix in the The portable series four-stroke Yamaha outboard ranges in horsepower: 25HP, 20HP, and 15HP. one guy taught me to keep them in vinegar to remove the carbon, and that worked like a charm for plugs 3 - General Information SAFETY MEASURES — Installation and Maintenance Outboard Installation Maintenance Whenever running the engine, assure there is proper ventilation to avoid the accumulation of Mine is a 1999 C90 and I have seen some water on the spark plugs caused by condensation, especially after sitting up for a time in higher summertime humidityso maybe try to dry your cylinders/combustion chambers/spark plugs with air hose, ether, whatever before pulling the heads off. Submitted by joel88 on Mon, 2012-08-27 19:36. 028") BPR6HS 3. One of my fishing buddies summed it up best last night. hi , i have a johnson 50hp 1979 outboard 2 stroke im having difficulties starting it i have replaced old fuel for new with correct mixture of oil . 040: 2. Example, stock settings are #410 main jet and BR9 plug, so when using a #440 or larger main jet, a hotter BR8 plug could be advisable. We are on a budget and I like the simplicity of 2 stroke outboards. When a spark 1. Next, without delay, pull the spark plugs, drain the cylinders and spray an entire can of quality fogging oil (such as Lear Chemical Corrosion Block) throughout, rotating the crankshaft to save the cylinders. Re: One spark plug dry You are running a two stroke where the plugs eventually are supposed to look "wet" but dripping. Remove the spark plug 2. That’s due to how oil lubricates different types of engines. Wet Plugs. 8mm (. 5, Fourstroke f3. Part #: 6748 Line: NGK. It is doesn't the take the plug out and and see it's getting wet with fuel/oil. So the one clean plug sounds like an ignition prob and not a fuel one. Two Stroke engines burn oil. 5 litre 2 strokes would run several years without fouling plugs. Re: Oil on Spark Plugs You put oil in the gas. That is just a fact of life. You just don't want dripping wet plugs, they will have quite my plugs are soked in gasoline all the time. Mercury engines come from the factory with the correct heat-range spark plug Aftermarket Mercury Outboard Spark Plugs. Engine Misfires: The engine stutters, coughs, and hiccups like a dragon with indigestion. Wet spark plugs in an outboard engine can indicate a problem with the engine’s cooling or fuel system. Misfires often point to inconsistent or weak spark caused by worn-out plugs. New pump bulb. Other than that. This engine uses a “wasted spark” system: both plugs spark at top and bottom of each stroke. If the plug is black with soot, it can mean that the fuel has too much The plug was badly fouled. Confirm the oil pressure switch isn't killing spark, etc. Actually having a good spark inside is an entirely different issue. 2 x 90430-08020 Lower Unit Drain Screw Washer (OSDW802) 2 x B8HS-10 NGK Spark Plugs. Today I cleaned it off and what not, put it back in and it'll crank, then turn off after about 3 seconds, and a lot of smoke is coming from the muffler. so i Replace it and again it wants to start , but only for one kick. Customers praise the spark plugs for their quality and performance. At higher rpm's or "on the pipe", the combustion process is cleaner, but still not as efficient as a 4 stroke. However, wet storage at your local marina could be a great option, especially if you take the necessary winter precautions. Label each cable before removing them both, or remove one cable, and replace that Remove the spark plug wire by gently twisting and pulling it off the plug. Skip to the end of the images gallery Skip to the beginning of the images gallery If there's a spark and fuel, it should run -- or, at least, show some signs of trying. Pull the starter rope through until all the water has been pumped out of the cylinder. Change the plugs and it runs fine again. But wont start now. If the spark plugs are constantly wet, your car can end up with misfires, poor I have a mercury 40HP outboard two stroke motor. By: Graham Kilkelly on . In normal use, most of the oil gets burned off the plugs and the rest goes out the exhaust. Wet-Spark-Plug. Or, if you blew a 40hp powerhead & found a 50hp for a good price, you could probably just bolt it on (I can't say for sure with this particular motor). These are the two most common types of spark plugs used in outboa 2001 40hp 2 Stroke Mercury Outboard Trouble. O. This can lead to pre-ignition. 1996 Mercury 15 hp 2 stroke, wet lower plug. All cylinder's have sparks and the fuel pump is running well. The spark plugs stick into the cylinders too. Came across the Hangkai 6hp outboard from China which is very well priced for a few hundred Euros. A high voltage is applied to the center electrode but if there is carbon adhering to the firing end of the plug the insulation resistance is lowered and spark leakage occurs, so this voltage does not result in a spark across the spark gap. 9, every few months of use it will have no spark. Charlie . After all, no one expects any kind of hassle. 8L: Bore x Stroke: 96 x 96. Thanks, Larry I picked up a weed eater that wouldn't run because it has a non-resistor plug in it so I figured a reminder might help a few people. You can run a compression test on a cylinder by inserting a gauge in the spark plug cylinder and turning the engine over several times. I have a buddy who just purchased a new motor and has a case of 12 BR8hHs-10 plugs he used in his 115 yamaha. 0L: Recommended Cooling: Thermostatic Control: Ethanol Blend Limit: 10% Maximum: Outboard marine engines work much hard than automobile engines. A wet spark plug is simply a spark plug with the insulator and ground electrode wet and usually black in color when removed from your dirt bike cylinder head. I can help you figure out 9. They are really cheap and will tell you for certain if you do have a spark issue. I replaced the plugs, plug wires, coil, and ignition. Could there be anything about the electrical system on an old 2 stroke outboard that could cause spark plugs to foul? Last year in October, I had my outboard to quit on me after running ok. Dirty spark plugs – If your spark plugs are dirty, they can cause the engine to smoke on startup. NGK BPR6HS-10 2633 - Genuine Spark Plug Mercury Mariner 2hp 2. I believe that we did test the spark plug wires but I will check again however when I switched coils and plugs I believe that would eliminate the shorted spark plug wire possibility. The motor has a decal inside that says it uses a ngk B8HS-10 plugs which are what's in it now. 8 : 1979-1985 : 1 When a vehicle engine is reluctant to start, it often means that the spark plugs need changing. 5. 5 mlh. Boat Engine Parts Johnson Evinrude Outboard Forum . Reinstalled spark plugs and went to boat launch. When a marine spark plug begins to wear and go bad, there are a few common indicators. Is this normal. 99 - $29. 2 Stroke 847cc Cylinder: 3 Year of construction: 1992 - 2001 Standard. A typical spark gap tester is made by Lisle and sold in automotive parts stores. 0A855097 and up: 12127 -new spark plugs-new fuel filter-new fuel pump-Spark plugs look rich New plan is to check compression in the motor. He said, "This motor sounds just like a street rod. Joined Sep 18, 2017 Messages 8. It hasn't run for at least 3 years, possibly much longer, and I do not know its history. The plugs were NGK BR8HS-10 and specs call for B8HS-10. The cylinder is getting fuel but no spark. 2-Stroke: 0. This spark plug on a two-stroke engine should get replaced as soon as this spark plug makes it a hassle. I will be riding along fine and bam it starts running like carp. A fouled spark plug is when the spark plug ends get wet due to an excessive amount of gasoline inside the combustion cylinders. 6 Mercury outboards fouling plugs with low hours? 2020 Triton 18 TRX Tournament Fishing Package 2020 Mercury 200 Pro XS V8 Serial # 2B588923 In this informative and hands-on video, we bring you a comprehensive guide to rescuing fouled spark plugs in 13B rotary engines and other 2-stroke engines. With the spark gap tester connected to each of the spark plug leads, set the Spark Gap Tester to 7/ 16” (11mm). Luckily, these signs are fairly obvious if you know what you’re looking for or even know that you need to be aware. Leak Down, and running water through the flushing adapter I am having a problem with my Tohatsu 3. 3hp 2 My dad and I bought a 15' boat with a 1974 Evinrude 50 HP outboard on it. I have a 1997 c40tlrv 40 hp 2-stroke, 3-cylinder motor. Attempting to start the engine repeatedly (without choking) will help to The common mercury 25 hp 2 stroke problems include starting issues and poor performance. T. C Spark plug on one cylinder wet ,wont rev when under load but will rev when in neutral. again plug is wet. Yamaha 2 Stroke ; Fouling plugs all the time These are the ONLY spark plugs you should run in your Evinrude or Johnson outboard! The surface gap plugs and other brands of spark plugs will hurt your outb I would get wet. It has always been reliable and performed well. 2: USA: 8075603 and up: N/A: N/A: 19796: NGK BPR6HS-10. org/causes-when-spark-plug As a result, starting the engine may prove difficult due to the wet spark plugs. Is it possible that the carbs are running too rich and the mixture screws need to be adjusted? Are the different spark plugs an issue? My experience with smaller 2 stroke outboards I now own 2 Yamaha outboards; a 3 hp 2 stroke, and now an 8 hp 4 stroke. My 4 stroke auto engines do not run full throttle ever and the plugs last many thousands of miles. Mercury Mariner Outboard Forum . This motor is lightweight but can haul a heavier load boat. com 184 Jones Drive Brandon, VT 05733 USA (800) 209-9624 (802) 247-4700 (802) 419-3055 Fax Hi, our 20 year old Suzuki 2 stroke dinghy outboard just died with gear failure, does not look fixable. That should clean out the deposits. <br />i take it out for a run, look at the spark and its sooked in gasoline and oil (pritty black). 42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance. Yet, this thrilling adventure demands a commitment to regular maintenance, a cornerstone for safeguarding the engine's performance and longevity. Do you have the correct thermostat, pressure valve, compression spring and grommet? They are all located under the thermostat cover. AKDan Cadet. Anyone else with the 4. I would truly appreciate help from y'all on what else to check, or do, in an effort to resolve this problem. I ran it in every tank and kept No, outboard spark plugs should not be wet. The Anyway, the worst part is both motors are having the same exact problem, or maybe it's just normal to smoke and have wet black spark plugs on these 2 strokes? Hi, I got a problem with wet spark plugs, how would you guys solve the problem and get the motor to start? Wet spark plugs came standard on the Force. Spark Plug: DPR6EB-9: Starting System: Electric & Manual: Lubrication: Wet Sump: Engine Oil Capacity: 1. Outboard Spark Plugs MERCURY 75 hp - 75 hp - 3 cyl. My suggestion is to buy a spark tester at the local auto parts store. Yamaha Outboard NGK Spark Plug Guide. When I got home, I pulled all 4 spark plugs and all of them seemed wet. With all the oil on the plugs I really don't know how it runs at all but it does. How Often Should You Change Spark Plugs on 2 Stroke Outboard? Everyone has a definite and popular question. All seemed really clean inside, but bottom carb may have been try to start your outboard as normal after 1-2 pulls unscrew one of your spark plugs if it is wet from gasoline check on your carb the pilot needle screw if it is worn or out of For Sale: $2000 - Tohatsu 15hp Four-Stroke Outboard Motor, 2010: Giant Squid: Classifieds Archive: 5: 03-09-2010 09:36: For Sale: Zodiac 3. This part suits the following engines: Mercury Mariner 20-25hp 2 Stroke USA Model 1987-2007. The gas goes through the cylinders. 9-15hp 2 Stroke 2 Cylinder 1984-2007. Customers also mention that the plugs perform better than other brands. 028") B7HS: BR7HS: 3. Seat: Flat Spark Plug for JOHNSON 28, 35, 40, 48, 50, 55, 60, 65, 70, 90, 105hp - LV4, LV6 and related spare parts. Carby also has been overhauled. 5: A : 0. Should spark plugs be oily I checked the spark plugs and noticed that they have a bit of black oil on them. 4. Parts stocked and shipped from Gold Coast warehouse in Australia. To reduce smoke in a 2 stroke outboard engine, it is important to ensure that the fuel mixture is at the correct ratio. 4,819 The Outboard Shop: Outboards: Parts: Service: Used Parts: Spark Plugs for Mercury and Mariner TwoStroke Outboards Standard Spark Plug Manufacturer's No. 2 Stroke Cylinder: 4 Year of construction: 1994 - 2000 Mis-fire: carbon buildup on the plug causing the spark path to travel along the plug itself, rather than across the gap Detonation: When part of the mixture goes off because of the increased pressure and heat traveling out from the flame ignited by the spark plug and the 2 waves of pressure meet. 040") BPZ8H-N-10 : 8 : 2006-2006 : 4-Stroke: 0. For your check, The spark plug are new and wet by fuel. There was a petrol/oil residue/fluid within the sparkplug where "gap" is. New fuel pump. Re: Mercury 150EFI 2-stroke won't start (ECM problem ?) Hello, Thanks you for your feedback ! Yes, you are right, I turn the key and the motor cranks but don't start. It was a small outboard, only one plug. 5hp 3. A wet spark plug can be the result of the engine flooding spark plug application and information evinrude/johnson 1952-2010 evinrude/johnson motors ship with champion spark plugs. Used multiple times per month- usually a 1 pull to start engine up here in sunny QLD Fresh fuel New plugs Even after having initially run, it may stall from being cold , but then will not fire A normal spark plug will appear dry with a grayish color. Try Google to find “spark plug for two-stroke engine reviews. Mechanic's Assistant: Sometimes boat issues seem like they'll be really complicated, but end up being easy to fix. 0A855097 and up: 12127 Yes I did switch coils and plugs with the same result #2 cylinder will not fire. 4 L 1984-1 lean condition on 2 & 3, now # 2 damaged, if cyl has alum stuck to the cylinder bore u should not attempt to hone out alum. When the spark tries to jump the gap of a spark plug, there's a certain amount of resistance due to the plug gap, compression and heat. 5 0. The fuel filter on the engine sits at about 1/3 full Re: 1987 Mercury 25 HP Spark Plug Recommendation I went with the NGK BP8H-N-10 plugs after continued research indicated they work better with today's blend of fuel; specifically the amount of ethanol used in fuel today. Thread starter modulistic; Start date Sep 20, 2009; M. 99 $ 15. Spark Plugs for YAMAHA 70 hp - 70 hp - 70C 3 cyl. We recommend the use of Mercury or Quicksilver SAE 10W‑30 multi‑viscosity 4‑Stroke Outboard Oil for general, all‑temperature More demons. The spark plug in a 2-stroke engine must be able to withstand higher temperatures and pressures compared to those in 4-stroke engines. In vehicles and four-stroke engines, oil is added to a reservoir, separate from fuel. 79in) Prop Shaft Horsepower: 175 hp at 5500 rpm: Alternator Output at W. I diagnosed it to have fuel (plug was wet), spark (very strong, blue spark, jumping significant distance), and air/compression. Anybody trying to find the best Spark Plug For 2 Stroke Engines can check out my suggestion. This is the second installment of our three-part series covering the ignition s Navigating the waters with a 2 stroke outboard engine propelling your boat offers an exhilarating experience unmatched in recreational and professional boating. Thread starter Kailio; Start date Aug 11, 2018; K. Set the spark tester for 7/16" inch and see if you get a good blue spark and a loud snap as it fires. AI-generated from the text of customer reviews Other possibilities are the carburetor is adjusted too rich, or on a two-stroke outboard, when pouring too much oil in with the gasoline. I feel exhaust at the exhaust port. Then it starts up again and stops after a few minutes. Safe but a little rich overall. See a good spark when I pull. 5 outboard motor pdf manual download. 0mm (. I'm a little concerned that somebody who doesn't know what a wet plug is did any mechanical work on a motor. Sep 20, 2009 Dead cylinders wet spark plug. Please view the application guide below. I normally us the outboard the go out to our swinging mooring, about 5 minutes run each way. we have found that the surface-gap plugs, while lasting longer, seem to have a slight performance hit over the standard plugs. Thanks Jurie Signs of Bad Marine Spark Plugs. Filter By Brands ACDelco Autolite Copper Core Autolite Double Platinum Autolite Iridium XP NGK Laser Iridium Plug Number IZFR6K-11E Spark Plug - 6748. 5. This is a Japanese built 9. So of course they get oil on them. I have 7/16" spark at all three plugs. The valve cover end of the breather hose appears dry. "Plugs on a 2 Outboard Spark Plugs YAMAHA 25 hp - 25 hp - EK25F Enduro 2 Stroke 430cc. Marine - Outboard Search Results. On my last trip, my outboard did the same as it had before. Checked spark. FourStroke 2. 2 Stroke Cylinder: 3 Year of construction: 2001 - 2006 Standard. Add in excessive fuel (hydrocarbons) especially at low rpm's, and that just adds more resistance to The Causes and Fixes when a spark plug is wet with gas after removal. All 3 the spark plugs had oil on them (2 stroke oil). THANKS FOR WATCHING!@chefoutdoors SUBSCRIBE!!@danco_pliersUse code CHEFOU Hello, I have a Yamaha 50tlr 2006. There seems to be a lot of oil on the spark plugs and inside the combustion area for a four stroke. The spark plug on the # 5 cylinder ( bottom left as viewed from the rear) - on my 2 stroke 2003 V150 HP TLRB s/n prefix 6J9 with about 335 hours on it, turns a blackish color and eventually fouls-up. Could be a blockage in the carb? putting fuel in through the spark plug hole is not always a good method the spark plug is on the cylinder/crankcase diagram, probably the same for both models Could be a 40 with a 50 cowling. Aug 11, 2018 #1 Hi, I got a problem with wet spark plugs, how would you guys solve the problem I have an 8hp Mercury 2 stroke outboard for my dinghy and it has generally been very good, but recently after having just filled the gas with 97 Premium (at Valero) and adding the appropriate oil, it is now not running. As genuine OEM parts, these spark plugs offer a nickel tip with a V-groove design, ensuring longer life and ideal performance. :-)If you aren't a mecha Nissan Outboard NGK Spark Plug Guide. I spray starter fluid and turn the crank The information contained in this guide applies to all types of internal combustion engines: two stroke engines, rotary engines, high performance/racing engines and street vehicles. I have replaced the trigger, both the spark plugs still first thing u cant try is swap the coils, leave trigger wires in place, just swap the wires from switchbox to coil, and plug wires to plug - if yours is like mine the top coil fires bottom cyl (#3), middle cyl 2, and bottom coil top cyl (#1). 2 Stroke. 2. Dry and Wet Fouling Although there are many different cases, if the insulation resistance between the center electrode and the shell is over 10 ohms, the engine can be started normally. 9 2 stroke- no spark. 032") BR6HS : 3. $15. I have a good spark goin on. pulled a plug and I have spark. Thread starter PatrickMonahan; Start date Feb 6, 2016; P. The spark plugs are covered with what looks to be oil each time I come in from fishing. Champion Spark Plugs for Johnson Outboard Motors. You seem confident about the spark and its timing, which probably points to a fuel problem as others have suggested. Outboard engines can be either two-cylinder or 4-cylinder. 9 4 to 8 year old outboard 2 cycle. BDFHYK 1134 universal Iridium Spark Plugs Compatible with Yamaha Tohatsu Mariner 2-Stroke Outboard Engines Replacement for BR8HS-10, Set of 4. The engine ran perfectly for the 10 years it was owned by my neighbor, and ran fine since I bought it in May. Is this normal or is there a problem. This isn't meant to offend, things are easier when people are honest Removed spark plugs and found that all three were wet with water. According to AA1Car. Re: 1980 25 hp mercury outboard won't start Thanks for the info. I cleaned them. Signs of Spark Plug Damage Buy NGK 2173 Standard Spark Plug - BUZHW-2, 1 Pack: Spark Plugs - Amazon. 030 inches. My mercury 9. 1990 Mercury Black Max XR4, 2-Stroke, 150HP Engine Tune Up with Spark Plug Replacement PRO TIP: There are two spark plugs on a Mercury 20HP 4-stroke outboard, and it's important that the cables are attached to the correct spark plug. . Outboard Spares brand of parts are Wet Spark Plugs. Compression on both cylinders are exactly 150psi. Worn piston rings – If your piston rings are worn 2 x 311598 Lower Unit Drain Screw Washer (OSDW311) 2 x QL77JC4 Champion Spark Plugs. Generally, the gap should be set between 0. 028") BR6HS : 3 : 1988-2002 : 0. 3. 5: AC Hi, I got a problem with wet spark plugs, how would you guys solve the problem and get the motor to start? Go. Also, if you don't have the correct plugs in it, or don't run the boat hard and hot often, or use cheap quality 2 stroke oil, that will all cause the plugs to have more oil than normal on them. Like many automotive components, spark plugs don't last forever. 99 - Original price $29. 2-Cylinder 2-Stroke 2-Stroke: QL78YC: L78YC: 0. It is designed for small bass, bay, and multi-species boats. 3) Insulation resistance. Customer: Hi , I have a 1983 mercury 25hp 2 stroke outboard that shakes excessively side to side at idle and does not have a smooth exceleration , sounds like a miss but both coils are firing . net. I take it back out again and the plug is wet with fuel. Will rev up in neutral. The recommended gap for spark plugs in a 2-stroke outboard motor varies depending on the manufacturer's specifications. certainly saw less build up on my Yamaha 2 stroke jet ski and smoother idle and general running on my 4 stroke Yamaha ski after. take a known great running 2 stroke pwc with proper maint and fuel delivery system and run it, There are major differences between the two and huge deciding factors that impact why an outboard engine smokes. I'm new to boating and outboards but I'm good fixing cars, these motors run or maybe it's just normal to smoke and have wet black spark plugs on these 2 strokes? The way I see it, it's running super rich if I were Hi - I have a 90hp Mariner 2 stroke outboard motor. Outboard Spark Plugs YAMAHA 70 hp - 70 hp - 70C 3 cyl. Motor is stock porting, compression, etc. A common malfunction is a wet spark plug. I would get some Yamaha Ring-Free additive. Use the gap gauge to check the electrode gap, which should match the manufacturer’s specifications. Type: B7HS: Wrench size: 20,8 mm: Thread diameter: 14,0 mm: Thread Length: 12,7 mm: Spark gap: 0,7 mm 2 x BP8HN-10 NGK Spark Plugs. Maybe need to go one heat range cooler. Pull the starter rope through several times. A wet spark plug can indicate water in the fuel while a white residue on the plug can point to a plug that is too hot. I pulled the breather hose on the carb intake and there was a light coating of oil in it. Gap: 2. You also want to have a look at the spark plugs inner insulator. If an engine becomes severely flooded, it may result in fouled spark plugs. Cleaned spark plugs. 035” (35 thousandths of an inch). Spray a ton of WD40 or the like into the spark plug hole. I have not Ohm'd any plug wires, or coils, or anything like that. I also swapped the plugs to see if the problem followed, however, the top cylinder was still not . MarineEngine. Only seemed to be hitting on one cylinder. sucks at the carb. In my YZ125's service manual it is suggested that 'if the main jet used is a +30 size over the stock one, a different heat range plug could be needed'. Spark Plugs for YAMAHA 25 hp - 25 hp - EK25F Enduro 2 Stroke 430cc Year of construction: - 1993 Standard. Thread starter AKDan; Start date Sep 18, 2017; A. Outboard Spark Plugs MERCURY 125 hp - 125 hp - 4 cyl. 9-15hp 2 Stroke USA 1987-2015. If the firing end of a spark plug is brown or light gray, the condition can be judged to be good and the spark plug is functioning optimally. It barely runs at idle and sounds like a beast when it's wide open. These issues typically stem from fuel system problems or spark-related issues. There is a light coating of oil inside the air intake. The owner/operator is recommended to have engine inspected and or maintenance performed to maintain emission levels within prescribed certification standards. 024") BP6HS BPR6HS 2. Fat on the idle circuit. 8hp 1975-1989 Sierra Chrysler Force Engines Replace 18-8819-1, 3 Pack Remove. After every 20 hours, the plug should get rechecked. Spray a lot of WD40 in again and quickly put the spark plug back in and connect the spark plug wire. Known for their reliability and performance, these engines have become a popular choice for boating enthusiasts worldwide. Motor sat for 4 years, first thing I did was pull the carbs and full carb clean with new gaskets/floats/needles. Ran fine after the spark plug was properly gapped. Only do this if your engine doesn’t have a 2 stroke oil tank on it and you pre mix the fuel. Yamaha Outboard Forum . I dont know much about 2 strokes so any advice appreciated. I have a 2008 yamaha 90hp 2 stroke on my high tide boat. 2 stroke spark plugs should look like your typical oily plug. Any ideas? It seemed to use quite a lot of fuel. I checked the ignition switch, the neutral safety switch, and the emergency switch- all okay. The CDI generates a signal on each pass of a magnet, there is one coil and two leads from the coil. Please select your application and get all our suitable NGK and NTK parts – ranging from spark plugs, glow plugs exhaust gas temperature sensors and EGR valves. 2 strokes leave a wet residue on the plugs due to the oil mix in the fuel and the scavenging process of the engine. 03: 1998-1995: 3-Cylinder: QL78YC: L78YC: See how to test the spark plugs on your outboard in this video from boats. Hello my name is Nick. Literally, this popped up all of a sudden. 2 Stroke (2000-2002) 150 hp - 150 (2000-2006) Dry storage tends to be safer for outboard motors. 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