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Dan693

Oil in the Onan Muffler

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Dan693

Thought I should get a little advise from the elders.....Onan 14 HP single that exhausts out of the bottom of the head.

I'm scrapping the old can type muffler and fabbing a new header to let it flow better.

 

The issue is some oil is collecting in the old muffler. Not a ton but enough to make it smoke some on startup. It seems to clear out after running for a minute..

My feeling is worn rings....it has about 600 hrs on it but not worked hard.....only mowing.

Not sure how valves would cause this.

Since I have the hood and muffler off I'm thinking maybe hone the cylinder and install a new set of rings.

 

Any thoughts on this issue and any products I could add to the oil to maybe free up the current rings?

 

I probably could live with it but I'm just not built that way lol.

 

Thanks in advance!

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Howie

Valve guides? 

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Tractorhead

How about the Intakevalve Seal?

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The Tuul Crib

 I'm with Paul on this one sounds to me like valve guides .

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The Tuul Crib
Just now, The Tool Crib said:

 I'm with Howie on this one sounds to me like valve guides .

 

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WVHillbilly520H

Marvel Mystery Oil it does help.

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MalMac

Are you sure you got a Onan there. If it’s a 14hp in a Wheel Horse it’s a Kohler. I ageee with the rest if your getting that much oil. Also could be a crank vent. When the crankcase builds up pressure it has to relieve it self somewhere. With a Kohler it can come from anywhere. 

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WHX??

He's got a 244H Mal so yes a  EV-145 Onan vertical. Not sure if there are guide seals, check the manual. Guides could weeping by a little tho.

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