oil on the spark plug

Discussion in 'Mechanic and Repair' started by nassa76, May 19, 2009.

  1. nassa76

    nassa76 LawnSite Member
    Posts: 8

    Got a free 50 inch mower Whit a 20 hp koler motor. when it runs you see some white smoke coming out of the exhaust. I took out the spark plugs one plug had some oil on it not good, So I'm thinking i just need to replace the piston rings on one side. Is that a big job and is it worth it. The deck is in good shape so is the frame and body. What do i do
  2. 4.3mudder

    4.3mudder LawnSite Silver Member
    Posts: 2,227

    White smoke out of the exhaust sounds like water in the gas or a blown head gasket. If you have oil on the plug then you are burning oil, and the oil is getting past the rings.

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