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  1. #1

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    Piston wash on 785 any advice ?

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    Still new at this piston wash reading, any input would be great ! About 1 hour on new motor. The PTO piston has no wash ( photo of spark plug ) too lean ??


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by [email protected] View Post
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    . The PTO piston has no wash ( photo of spark plug )
    ... Steam cleaning?

  3. #3
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    How much run time is on those?

    What kind of RPM are you getting?

    I'm with Keith. New looking piston domes usually are water intrusion.

  4. #4
    How is the machine running as well?

  5. #5
    Also might be a dumb question but are you running same plugs in all cylinders? A crap plug wouldn't explain the piston wash unless that cylinder is not firing whatsoever but that plug seems mighty dark.

  6. #6
    Rasta Mon Condoms We Be Jammin!!!!! TxVirageTx's Avatar
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    mag looks a hair lean,cen is rich,too much fuel,pto is either WAY RICH or waters leaking past the dome r-ring or the pipe is leaking close to the cylinder,pressure test that pipe and make sure the adapter that bolts to the jug is sealed up

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