I was cutting grass last weekend and all of a sudden the mower started a clanking noise and white exhaust. I turned the mower off and checked for oil leaks. I found none on the engine, but the tube from the oil inlet to the fuel pump was leaking oil. As I understand it, the tube provides pressure to operate the mechanical fuel pump. I checked the oil inlet and made sure it was pushed into the oil reservoir completely (it has an o ring to seal it). I checked the oil and it was smoking slightly and was a little low. About a month ago I had a new carburator put on. Why would oil be going into the fuel pump? Any suggestions? Thank you.
JD L100
- Thread starter ogurad
- Start date
reynoldston
Lawn Pro
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- May 23, 2011
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It sure doesn't sound good. It looks like you have a lot of crankcase pressure. The reason for this would be something is wrong with the piston or rings? Which would also be the reason for the white smoke.