Recent content by Newboater5.0EFI

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    1998 Mercruiser 5.0 EFI backfiring

    The engine backfires on acceleration. Then runs perfectly fine. Slow down fine. Give throttle and again backfires before getting to plane. Then runs fine again. Slight rough idle when warm. No stalling. Cap rotor plugs and wires? Runs at normal temp. Can anyone help with this?
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