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How does one confirm that the so called making oil is a problem on a motor that has just 40 hours on it and followed the manuals break-in period? Runs fine and gets to 5,900 rpms at wot. Notice some black soot at the exhaust hole that seems odd for a newer motor. Thanks
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the oil level will go up if fuel is contaminating the oil -
making oil
Is really a bad term..if the oil height is rising,, Its from gas or water...Plain and simple..Comment
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should I not continue to run it? Is it possible the ring(s) will re-seat on their own or will it continue to get worse and cause further damage? Any experience with Yamaha not honoring warranty claiming " break-in" procedures not followed correctly? Followed the recommended action to the tee, could there be another cause of contaminated oil?
p.s. just trying to get all info I can before returning to dealer that re-powered.Comment
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IDK how Yamaha is handling it BUT, I would start by documenting, (keeping log) taking pictures of the dip stick with date and time as the oil rises.
A oil analysis would confirm what's going on, it its fuel etc and probably be your best bet..
Please post back your results...Scott
1997 Angler 204, Center Console powered by a 2006 Yamaha F150TXRComment
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If you have not researched what can cause this 'making oil" you should.
Slow *****ing for a long time and not running high RPM afterwards to get the motor up to temperature to cook the fuel out of the oil is one reason I have read about.
Motor running too cold due to stat stuck or real cold water temps where you are running may cause it also.
Motor needs to get up to proper temp every time you run it before putting it away.Comment
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It is not a real problem IMO but it can be a nuisance. And it causes needless concern.Originally posted by Sammy150 View Post
The term "making oil" is used when the oil level rises due to fuel getting into the oil. Generally this will result when the piston rings have not yet seated. The problem is exacerbated by the fact that the air/fuel mix is on the rich side and the motors run on the cool side. Yamaha's break in procedure is such that almost the entire 10 hours break in time can be run at idle. Power is needed to help the rings to seat.
It is also possible in outboard motors for people to get fooled into thinking it is making oil when really it is not. Or, at least not to the extent that folks think that it is. Carefully and correctly check the oil level and don't try to fill it to the top level on the dip stick. An incorrect check may cause too much oil to be added.
Soot is a normal byproduct of the burning of gasoline. Moreso in a rich running engine which is how Yamaha's run.
You are going to have to run the motor at considerable power for a considerable period of time to get the piston rings to seat.Comment
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