Took 94 LT1 out of winter storage. (used Stabil in fuel). Had rough idle. Refilled tank when 1/2 empty, problem persisted. Drained tank and refilled, problem persisted + low speed moderate load misfire whien OD kicks in at ~ 48 mph on moderate throttle. Down shifting and increased throttle results in engine normally -- so fuel flow seems ok. No warnings such as check engine.
Ideas (MAF / O2)?
Submitted by: Rod Simmons
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