Re: not a tractor---but can you help me out??

Posted by Phil on January 12, 2004 at 20:52:49 from (65.26.185.21):

In Reply to: not a tractor---but can you help me out?? posted by Bruce on January 12, 2004 at 07:06:16:

I am an aircraft mechanic. Most general aviation engines are air cooled. They depend on airflow to keep them cool. In the same token, they also require FUEL to help keep them cool. Only a small portion of the fuel in the air/fuel mixture is burned. The rest of the fuel helps to cool the cylinder. That is why airplanes have mixture controls and exhuast gas temp guages. This allows the pilot to find the best efficiency of the engine for a given temp. and altitude.

What does this mean here? I would bet there is a restriction or leak somewhere with the fuel/air ratio. You must have a leaky gasket, cracked head, etc. Something keeping the cylinder from getting the right amount of fuel. Does this engine have a carb. or is it direct fuel injected? Check all the lines and fitting and any fuel/air pathways. My guess is the engine is running way to lean on the one cylinder. I did not see where you mention that you changed any of the timing settings. Just that you changed a valve. Unless I missed that part. Start with a possible air leak or bad intake gasket and go from there.

Keep us posted.

Phil

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