Posted by paulinkansas on March 09, 2012 at 08:47:49 from (68.103.68.211):
The 23 horse Onan 2 cylinder air cooled engine in my Deere skid steer has been losing power. A few days ago, it would stall when going up a hill or turning sharply. One exhaust pipe would glow red hot and blue flames would be present in that cylinders muffler. The loss of power has gotten worse. Now it stalls when put in gear.
I posted a message on here and followed the advice. Once advice was to check for leaks in the manifold. I sprayed it with carb cleaner with the engine running. The rpm's never changed, so a leak in the manifold is probably ruled out.
I was able to put a pressure gauge on the cylinder that has the fiery exhaust. It showed zero psi. The pressure gauge went on the other cylinder, it showed 15 psi.
The next thing I'll do is remove the engine. I have an owners manual that shows how to do that. A service manual has been ordered and is in the mail.
But until that service manual gets here, should I go ahead and get to the valves in both cylinders?
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