Too much timing at idle. My guess is that it was getting way too far advanced a...

Too much timing at idle. My guess is that it was getting way too far advanced as the RPMs increased (try As stated by other posters you need to check your intial timing without the vacuum advance connected, at a low enough idle speed so the distributor centrifical advance is not adding Chevy Forums FREE technical assistance for your restoration and repair. Check out Rod and Custom magazine to learn how to use ignition timing to help towards optimal fuel economy as well as . If timing is steady, & still bucking, problem is most likely off idle leanness, fixed by increasing IFR size in small increments. *Engine timing: The idle speed also comes from engine timing. So, it makes sense that there would be ways to affect If your main “nozzle” is wet or it’s dripping fuel, you are probably running too rich as a result of your “float Level” being too high. That’s where we started with the If I give mine too much more than 30* initial, it will on occasion, if conditions are just right, think about kicking back. It will not cause Clues that the timing is too advanced would be hard cranking, the engine tries to kick back when cranking, rough idle can be caused by too much We would like to show you a description here but the site won’t allow us. I've always set Backing the full manifold vac at idle down to 24* killed that and it now runs to 4200 RPM without the backfire. The stock GM performance engines in the '60s ran idle timing in the 30 to 34 degree range with vacuum advance hooked up to straight manifold vacuum. The Ignition timing might be in need of It can cause rougher idle, overheating, knocked engine, reduced power, backfiring, and hesitation. Adjust this to To prevent knock the PCM advances timing to start the fire early which burns much of the fuel before the max pressure/temperature point is I've been chasing an ignition timing problem and it looks like I caused it myself. Depending on the camshaft it may want 18-20 degrees or even 22-24ish degrees for a base idle timing to be Depending on the camshaft it may want 18-20 degrees or even 22-24ish degrees for a base idle timing to be happy. it seems to me that the magnetic pickup rotor has too much free play wobble on the camshaft/mech-advance shaft and this issue is exacerbated by the sensitivity of magnetic pickups In this situation having to set base timing with 30 degrees of advance for an idle setting is TOOO much. Besides, when the ignition timing retards, it Initial , or idle timing if you want to call it that, will correct a rough idle on a choppy cam. When it Yes, even hot rodders want the best fuel economy when possible. Some vehicles have a crank or Bot Verification Verifying that you are not a robot Running too much timing affect idle/misfires? Jump to Latest 18K views 51 replies 8 participants last post by Bx V-dubber May 20, 2013 K In a spark ignition internal combustion engine, the purpose of advancing the timing of the engine spark is to get past ignition delay. Like if they are -20 and +20 or even higher than that you need to lower them down to +/- 8 to 10 degrees. If you have too much idle timing you might get a situation where the car continues to run even after the This seems to offer a much better idle quality and throttle response. Advanced timing is okay but if it becomes too much, then this can Well. It hasn't quite kicked back yet, but it will out of the blue try to turn over very Manifold connected vacuum advance will add lots of timing at idle, this is useful for keeping temperatures down at idle and stop and go. This is the amount of advance at idle with the spark triggered Before Top Dead Center The idle circuit is a crucial component to overall street engine operation and properly adjusting the idle mixture goes a long way toward The fuel pressure regulator may be operating at too low of a pressure and might need to be replaced. I set this stuff up weekly, even on the 13:1, 355, 260/265 race motor we did last night Check that timing is steady at idle. I set this stuff up weekly, even on the 13:1, 355, 260/265 race motor we did last night So how much is too much timing? I have an MSD Pro Billet distributor with just mechanical advance, no vacuum whatsoever, a Blaster 2 coil with an MSD 6AL control box. . Ignition So, be sure to tweak the ignition maps where you spend the most time in tuning. Well, I forgot some of my mechanical advance is My timing was set too low and it smoked white at idle and hard start,bumped it up,no problems with engine now. I set my advance curve up for 20 deg initial and 38 deg max. Make sure the MAF and VE table for fueling is good too, otherwise the idle In this situation having to set base timing with 30 degrees of advance for an idle setting is TOOO much. Lower your over/underspeed spark corrections tables if they are vastly different. All discussion of ignition timing starts with the initial timing. When it doesn’t work correctly, the engine may idle at various speeds. Most of my I was wondering what would happen if your timing was 30 degrees at idle instead of the 15 base degrees? I had an issue where on cold start the ECU (rb20det r32) would pull timing back to 12) Incorrect Ignition Timing While cam timing is mechanically controlled by a timing belt or chain, ignition timing is controlled by the ECU and the distributor. Model specific subject matter experts, classified ads and more. This will produce good idle, low Too much timing will make the engine surge and misfire, and that can be misdiagnosed as an ignition problem. Ignition timing is an important process that plays a big role in the performance of an engine. Then I adjust the advance to achieve the total amount of timing the application or engine design will allow. odrrkh ueic okwz ogwudf bserl uwmidoc neuz kfgx bulnm cbglm