early 80's 90h.p.v-4

[scotttp603]

Just bought a boat powered witha 90hp v-4.Started it with the muffs on briefly.Trailered it home 15 miles and have small amount of black/brown oil leaking from under prop down skeg.Boat has been dry for 18 monthes. Bad seal,or just puking nasties?

 

[ezeke]

Re: early 80's 90h.p.v-4

With no load, the 50:1 fuel/oil mix has more oil than the engine needs and the oil does not burn off. The excess oil drains out with the exhaust,and eventually gravity carries it down to the propeller. It's perfectly normal on a two-stroke motor.