Aubergine O'day 32 CC
Join Date: Oct 2008
Location: SANTA BARBARA, CA
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1978 yanmar 2qm20 fuel in oil. from gear and maint forum
over past year fighting a problem with fuel getting in oil, the latest is....
pulled the inj pump took it to a shop, they said "bad seals, bad plungers, should be the problem", tested the injectors the old ones were still good. got inj pump back, put it in, starts better, sounds good, planned a trip.
took boat out this weekend to santa cruz island (great trip!) ran motor for about 5 hrs, and as im getting ready to enter anchorage cough, chug, i shut it down, started the evinrude on the back, got anchored, checked the oil again and darn, its full up the dipstick again. It appears the problem is still continuing.
so any old school mechanics got any ideas, i have replaced lift pump, injectors, and injection pump, the 3 areas the fuel would be entering the oil from, i changed oil and got almost 3 gallons out of it. thin. supposed to have 5 quarts, i will be watching, monitoring level, ran it for about an hour after changing level seems ok, seems to take about 5hrs to come up the dipstick.
any other areas to go after where fuel would be entering oil?