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gas in the oil? on a kohler 15hp

Discussion in 'Mechanic and Repair' started by Amco Landscaping, Nov 19, 2006.

  1. Amco Landscaping

    Amco Landscaping LawnSite Member
    Posts: 80

    What would cause gas to get into the oil. A friend of mine has a tractor that he drained the oil and there was a ton of gas in the oil. why does this happen?

  2. mojob

    mojob LawnSite Senior Member
    Posts: 515

    Does it have a crankcase pressure driven fuel pump? If so, the diaphram might have a leak or if the float is stuck in the carb. the fuel could be finding its way to the crankcase.
  3. grass_cuttin_fool

    grass_cuttin_fool LawnSite Gold Member
    Posts: 3,503

    This is prob the culprit

  4. pugs

    pugs LawnSite Gold Member
    Posts: 3,022

    Could be a leaking needle/seat in the carb. Could be a leaking Mechanical fuel pump which is what most of those Kohlers have.
  5. A.D Services

    A.D Services LawnSite Member
    Posts: 224

    yea you could fix it but it will happen again in a matter of time. your best way of fixing it is a gas shutoff valve
  6. thecrankshaft

    thecrankshaft LawnSite Member
    Posts: 172

    Has the engine sat for any period of time? With or without fuel stabilizer?

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