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    1999 Mercruiser 5.7 TBI hesitates but does open up

    The engine runs strong at wot, but when accelerating from idle it will bog down before coming back to life and running great. It you accelerate slowly it will act fine. Fuel pattern and flow from the injectors seems strong and constant. Plugs, wires, cap, rotor and coil are all new. I timed it...
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    8.1Gi-H Popping (backfiring?) at WOT

    Engine starts and runs great up to 3/4 throttle. Smooth as silk. No missing. No noises. Perfect. Once you open her up, the random popping noises start. New plugs. New coils. Took the fuel cell apart. some very light paint debris in screens, but no chips or blockages. Cleaned it all up and...
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