Spark advance problems!!
12-26-2009, 11:38 AM
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Spark advance problems!! OK, so I'm getting random drops in spark advance % causing power loss. It doesn't seem to be related to any other censers, and I'm not throwing any codes. The LS1 is out of an 02 WS6 and is now in a 92 Camaro, but it just started doing this a couple of weeks ago, so it doesn't seem to be related to the swap. Other than that the motor is bone stock. Here is a quick shot of what is going on. Check out the white line in the middle graph. It won't do it while I'm sitting in place revving the engine. It has to be under some kind of acceleration. Someone help me out here I'm going nuts with this one.
12-26-2009, 11:20 PM
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You sure you do not have a bad ignition coil?
I can not imagine a tune related problem causing this. I would lean to a mechanical problem causing your spark advance problems. I have never seen that kind of spark jump.
I will let the experts comment on this.
Good luck.
..WeathermanShawn..
I can not imagine a tune related problem causing this. I would lean to a mechanical problem causing your spark advance problems. I have never seen that kind of spark jump.
I will let the experts comment on this.
Good luck.
..WeathermanShawn..
12-27-2009, 01:44 AM
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You sure you do not have a bad ignition coil?
I can not imagine a tune related problem causing this. I would lean to a mechanical problem causing your spark advance problems. I have never seen that kind of spark jump.
I will let the experts comment on this.
Good luck.
..WeathermanShawn..
I can not imagine a tune related problem causing this. I would lean to a mechanical problem causing your spark advance problems. I have never seen that kind of spark jump.
I will let the experts comment on this.
Good luck.
..WeathermanShawn..
12-27-2009, 01:56 AM
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Yea, I am probably getting in over my head commenting on possible mechanical problems (not my specialty)..
Not to discourage you, but I ran the MSD Coils for about 6-8 months. After 6 months I had all sorts of misfires, and upon inspection..2 of the coils had failed.
I went back to my stock coils. Again, not to discourage you..others experience may be more positive, but going back to the stock coils solved the problem.
As far as your current dilemma..I would still lean toward an ignition problem that is not tune related.
I can not think of that kind of spark jump..unless you have some 'hidden' Spark Table in your tune that has erroneous values. Thats a real long shot though.
Hopefully we can get it figured out.
..WeathermanShawn..
Not to discourage you, but I ran the MSD Coils for about 6-8 months. After 6 months I had all sorts of misfires, and upon inspection..2 of the coils had failed.
I went back to my stock coils. Again, not to discourage you..others experience may be more positive, but going back to the stock coils solved the problem.
As far as your current dilemma..I would still lean toward an ignition problem that is not tune related.
I can not think of that kind of spark jump..unless you have some 'hidden' Spark Table in your tune that has erroneous values. Thats a real long shot though.
Hopefully we can get it figured out.
..WeathermanShawn..
