10-10-2008, 10:18 AM
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CC Member
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Join Date: Oct 2003
Location: Saratoga Springs,
UT
Cobra Make, Engine: Shell Valley, 418W, tremec 3550tko, 9" ford rear, 3.0 gear, silver/black
Posts: 408
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Not Ranked
Engine Stumbling Issue
418W - QFT 850 DP - MSD 6AL - 12 degrees initial - 36 total
This is a new problem that has not been present before.
When VERY gradually accelerating, the engine would stumble, not really a miss but a stumble, until rpm reached about 1800 then it would catch and run fine. When quickly accelerating there is no issue at all! I checked the timing to make sure the dizzy was advancing which it was so I then advanced the initial timing 4 degrees and the problem went away but now the engine does not seem to have as much power as before. (Seat of the pants feel)
That would now put the initial @ 16 degrees with the total advance at 40! I have the weakest dist. advance springs in the MSD which is all in by 2000 rpm.
Any ideas? I do not detect any detonation with that much advance but am nervous to have it that high!
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Terry
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