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I have a 2002 Yamaha f115 outboard. started running funny at low rpms, came home, did a checkover, found water in the oil, very milky colored. I have read a few things about this, what is my next step? do I drain the oil, due to saltwater, fill back up, fog pistons to keep from rusting, any help would be appreciated........
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Yes change the oil and filter, but you need to circulate to get it to replace the contaminated oil.
Your problem is how would you do that because you don't want to add further water. Short runs (out of water and no earmuffs etc.) but don't let overheat; your water pump impellor might also get damaged.
I'd spray WD40 down each cylinder just like winterizing.
You may need to change oil and filter a couple of times. When reasonably clear investigate how this water is getting in. Take notes before you do anything because you don't want to test with water- you may be able to determine which cylinder by looking at each spark plug for water.
It is urgent to get water out of motor! -
water in the oil
I would suggest something better than water disbursement { fortieth attempt} (wd 40) not a very good oil..You should replace your thermostat after a complte drain and refill w/new filter and test run and ck agin for water in the oil..if its still there.. you have a major issue...and don't let it sit with milky oil in her...Comment
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Well ?
Did the thermostat fix your issue ?? a common known four stroke problem.. and BTW its called "wicking"Comment
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problem
got all the old oil out, 3 fills and drains, new filter. had a mechanic look at it here at my house, taking it to his shop tomorrow, only number 4 cylinder plug looked bad, rest were normal.......i'll let everyone know whats up soon. thanks for all the advice......Comment
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water
head gasket leaked, then salt water ate thru outside of water jacket around piston, 3000.00 to fix........bought a 2015 yammi f115 9000.00, 5 year warranty.Comment
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Thanks for coming back and reporting what was found as the problem.
I am sure it will help someone down the lineComment
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