F115 Yamaha, strange problem or sabotage?

mish

Cadet
Joined
Mar 21, 2006
Messages
28
Hello, I looked for this problem, but couldn't find it... <br /><br />My brother have a problem with his F115 Yamaha 2003. He speak poor English, he ask me to discribe his problem. Sorry, my english is also bad... But, i give it a try<br /><br />A mechanic checked the oillevel of his engine. When the mechanic pull the oilstif out of the carter, water flashed out his engine. There was a big (water and oil) pressure in the carter. Big problem. It is strange because 10 hours before my brother checked the oil and eveything was oke...<br /><br /><br />He changed the oil. After he runs the motor for 7 hours(every 15 minute he checked the oil), every thing was good. No water, good acceleration, good speed..<br /><br />I can explane this problem. Have someone a explanation for this? Maybe a person put water in his engine???? The change is little, he is a very good guy. But you never know...<br /><br /><br />Anyway, thanks.<br /><br />Mish from Holand.
 

JRJ

Commander
Joined
Sep 11, 2001
Messages
2,992
Re: F115 Yamaha, strange problem or sabotage?

At the very top of this category: Engine Repair and Maintenance, open Engine FAQ's. There is info on 4-strokes "making oil". Good luck.
 

mish

Cadet
Joined
Mar 21, 2006
Messages
28
Re: F115 Yamaha, strange problem or sabotage?

Hee, thanks for the tip. I read the topic. Very clear and handy! It seems it describe situations with a little water in the engine. Or is this also in the case of my brother?<br /><br />Thanks al lot,<br /><br />Mish
 

JRJ

Commander
Joined
Sep 11, 2001
Messages
2,992
Re: F115 Yamaha, strange problem or sabotage?

I don't know if its sabotage or the Yamaha "making oil" problem, which is usually fuel getting to the crankcase.
 

bossee

Senior Chief Petty Officer
Joined
Jul 18, 2002
Messages
727
Re: F115 Yamaha, strange problem or sabotage?

Hi,<br />Make sure you check oil level in correct way.<br />See this thread (last): Link <br /><br />Do not overfill oil, keep oil level in the middle of oil dip stick marking.<br /><br />There is a Yamaha F115 upgrade kit for outboards that have problem with making oil (if that is the problem with Your brothers F115).<br />Some info (in the middle of this tread): Link <br /><br />I have a Yamaha F115 2003 myself but never any problem you describe.
 

mish

Cadet
Joined
Mar 21, 2006
Messages
28
Re: F115 Yamaha, strange problem or sabotage?

Thanks Guys,<br />I print and read this tommorrow. Thanks for the tip. Next time I try to find this link by myself.<br /><br />Thanks, Mish
 
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