kawasaki 15 hp oil full of gas!

Discussion in 'Mechanic and Repair' started by mainstreet1984, Nov 6, 2013.

  1. mainstreet1984

    mainstreet1984 LawnSite Member
    Posts: 146

    Hi everyone! I need help with the kawasaki WB 15 hp engine, the older 2003 version. One day the engine started smoking like crazy, lost power and stopped. It seemed that the oil went into the cylinder. I checket the oil level it was two times over the limit! so I drained the extra oil and finished the cut. it worked for a while longer, but then the situation happened again. I decided to check the engine and discovered that the oil in it was mixed gas. I suspect there might be a problem with the needle in the carburator, that allows gas to go through the cylinder and into the oil pan. Does this ring a bell to any of you? I would appreciate any advice regarding solutions.

  2. thom

    thom LawnSite Member
    Posts: 147

    Inspect the spark plug. black soot, and wet will indicate flooding.Heavy
    flooding will allow fuel to get into the engine oil.
  3. Valk

    Valk LawnSite Silver Member
    Posts: 2,711

    Change out that 'gas polluted/diluted' oil and filter ASAP.
  4. BigFish

    BigFish LawnSite Gold Member
    Posts: 3,264

    Pull the carb, clean it, inspect the float for cracks/gas, replace the inlet needle and inspect the seat.
    I usually loosely attach the bowl, bolt up the carb, flow a little gas thru the hose, then attach the hose, remove bowl, run a bit of gas thru, and secure the bowl. A pain, but it helps to prevent debris in the carb. Lotta times it's easier to do it before ya bolt the carb up. Prolly be a good idea to replace the fuel hoses and mayhaps the filter.

    Obviously ya wanna change the oil, maybe a couple of times. Oil is cheap.
  5. Landrus2

    Landrus2 LawnSite Platinum Member
    Posts: 4,812

    I was going to add something but Bigfish Covered it all:waving:
  6. mainstreet1984

    mainstreet1984 LawnSite Member
    Posts: 146

    Thanks guys, I will replace the needle, the float seems to be good, don't know about the seat cant see any craks or scrapes. Thanks again
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  7. unkownfl

    unkownfl LawnSite Gold Member
    Posts: 3,838

    You want to replace the needle and seat together. Before you take it all apart make sure the float moves freely and doesn't have any fuel inside the float. Also, check to make sure the float was adjusted right.

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