MF 135 smokes like a train

twharton · Jul 2, 2012

I recently bought a MF 135 perkins ag3.152 engine (gas). It smoked badly. When I took the head off, one exhaust valve was burned through and all intakes were paper thin at the edges. I had local machine shop rework the valves & seats. It ran a lot smoother but still smoked like a train. I took the head off again today and found gasoline pooled up int the piston domes. The cylinder walls seem smooth but I can feel a definite ridge where the piston stops at the top of the stroke. I am assuming that it probably needs sleeves & rings but the gasoline pooling has me stumped. Can anyone offer any answers?

David G · Jul 2, 2012

Is the smoke blue white or black? You may need to get the
mixture right on it, then see how it smokes.

twharton · Jul 3, 2012

The smoke is blue. The carburetor was rebuilt recently and I think it is adjusted right, but I will check. This carburetor has an electrically operated fuel shut off on the bottom of the carb. It is disconnected right now, could that be part of the problem?

David G · Jul 3, 2012

A ridge means ring wear and blue smoke is oil. I would agree
a rebuild is in order, just be prepared for the price of parts
today.

twharton · Jul 3, 2012

do I have to separate engine from transmission to take oil pan off? I would rather not if I don't have to.

MF 135 smokes like a train

twharton

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David G

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twharton

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twharton

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