Quote:
Originally Posted by 3000GT MR
MT or AT? I know on my MT it would cold start fine but low low load like barley above idle to light cruise it would buck really bad and during med loads it would misfire. Once the car was warm it was fine until WOT i would get actual misfire codes and dropped cylinders. I have only seen this on stock copper plugs, never with iridiums.
Before it starts misfiring at WOT it would progressively get worse at light cruise and idle.
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This is on an AT xi model.
I just thought it was strange that it's only on cold idle; once it pulls vaccum, it's fine - even to WOT.
I attributed this to injector leak-down; I'll be changing all the plugs and coils due to mileage so I guess we'll see.