04-12-2008, 06:07 PM
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CC Member
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Join Date: Apr 2005
Location: Near Chattanooga,
TN
Cobra Make, Engine: SPF, 418 Stroker
Posts: 220
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Not Ranked
Engine Hesitation/Stutter/Miss
I have a weird problem. When backing off the throttle and when feathering to maintain a constant speed, there is occasionally a stutter that feels like a momentary loss of power. Sort of like the ignition system turned itself off for a split second. Everything is great when accelerating. I cannot duplicate this condition in the driveway. With no load on the engine, it backs off smoothly and runs smoothly at constant rpm. This problem just started last October and seems to be getting slowly worse. I've checked the timing and looked for vacuum leaks. Looking for ideas on things to check. 418W, MSD 6AL ignition, Holley 4150 HP. Many thanks.
Jerry
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