Stump The Technician...Name That Failure,,,

Discussion in 'Mechanic and Repair' started by piston slapper, Dec 3, 2012.

  1. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    I give up till I either up-grade my 27" monitor to a 32" or get some new freak'n glasses !!!
     
  2. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    The piston experienced a lack of lubrication...
    Possible bad fuelmix...straight gas...major air leak..heavy dirt ingestion...

    The sparkplug on the right was hit by the piston....
    I would have thought it was the wrong sparkplug (threads too long) but judging by the dirt buildup on the porcelain...it was installed and working for some time..
     
  3. BigFish

    BigFish LawnSite Gold Member
    Posts: 3,068

    Yep!
    That's the second blower them fools ran on straight gas!

    Man we been havin' a rash of low hour Kawasucki's throwin' rods, twistin' rockers and/or holin' pistons! Most all have been under warranty.
     
  4. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    #1....
    Whats wrong and unique in this pic...
    Got Kohler Tech rethinking things on this one...

    IMG_0064.JPG

    IMG_0061.JPG
     
  5. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    #2....
    How much is too much...???

    IMG_0051.JPG
     
  6. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Hmmm....no takers...???
    #1...hint...it has something to do with the valve guide...
     
  7. BigFish

    BigFish LawnSite Gold Member
    Posts: 3,068

    From what can see, looks like the part of the guide that protrudes into the intake broke off.

    Or mayhaps the guide seal went missing?
     
  8. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Ever have a Kohler muffler that rattles when you remove it.???
    It used to was Kohler's official stance that those little broken pieces of the baffles could NOT re enter the cylinder via the exhaust valve....and damage the cylinder..piston...valves...or the head...
    They didn't want to warranty the muffler during the headgasket replacements that were so common...

    This picture is the SMOKING GUN....I got them...
    The intake valve guide broke in pieces on cylinder #1. And if you'll notice...
    There is a piece of that valveguide stuck under the exhaust valve on cylinder #2..
    Cross contamination through the muffler...it does happen...
     
  9. BigFish

    BigFish LawnSite Gold Member
    Posts: 3,068

    Are you using a camera or a phone to take the pics? I can't really see too much detail ( course my eyes need an overhaul).
    But who would of thought that stuff would cross over like that? Interesting.
    Yeah, upon closer squinting, I see the exh. valve looks to be open in the first pic.
     
  10. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Naw. Those pics were taken with my 7 megpixel camera..
    If you view them on a droid or iphone you can enlarge them pretty good...

    The pics ought to make you think..... the next time you bolt on a rattling muffler...
     

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