Reply To: 120hp merc sportjet Straight TCW3 oil coming into to carbs after storage

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July 22, 2021 at 5:34 am #243435
billw
Participant

    US Member

    I’m sitting on my butt having coffee and can’t look into this until this afternoon; but there are some brass fittings in the oil delivery system and at least one of them is a check valve, as I recall. If the check valve is bad, oil can drain down from the engine-mounted oil reservoir This is all vague recollection. I will check into it more later. Sport Jets are very cool.

    Long live American manufacturing!