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

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

  1. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Question #9...Kohler Magnum 20 hp
    Condition...Engine smoking and leaking oil...oil level OK..14 psi crankcase pressure..

    Name That Failure
     
  2. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Question #10...Kohler CV750 30 hp DSAI ignition
    Condition...Engine running on 1 cylinder...remove and replace the sparkplug lead while the engine. Is running...the dead coil starts firing again...runs another hour and it stops firing..RnR the lead and its firing again...

    Name That Failure
     
  3. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Question #11...Kohler CV740...DSAI ignition..
    Condition...No spark while cranking...however if you cycle the key quickly back to the run position...it will start and run fine...replaced key switch...no change...

    Name That Failure
     
  4. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Question #12....Kohler Command CV25
    Condition...Not charging...new stator...flywheel..and regulator...12 volts to middle wire on regulator.
    Still not charging...

    Name That Failure..
     
  5. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Question #13...Exmark Lazer Z with 27 hp Kohler
    Condition....Little Billy got up early on the day after Thanksgiving to buy a new Lazer and get one free.
    He only needed one so he stored the other one in his shed for 3 years...in the 3rd year the Lazer he was using started having a few issues...so....he pulled his new 3yr old mower out of the shed and serviced the battery and the carb.....life was good....
    At 10 hours the engine threw a rod...the welch plug fell out of the crank and the engine lost oil pressure..
    Is this a warranty ???
     
  6. kymowboy

    kymowboy LawnSite Member
    Posts: 63

    I have seen a couple of these. Gasket between carb and A/C back plate not sealing and the air from the bulb isn't making it into the bowl to push the fuel up the nozzle. Have seen a warped back plate and a pinched gasket.
    Can't be a bad carb, I know where they are made...
     
  7. Breezmeister

    Breezmeister LawnSite Bronze Member
    Male, from South Jersey
    Posts: 1,491

    It should be, and he better have done his first oil checnge
    at 8 hours.
     
  8. BigFish

    BigFish LawnSite Gold Member
    Posts: 3,064

    Either broken/worn rings or breather valve is sticking or gunked up/clogged.
     
  9. BigFish

    BigFish LawnSite Gold Member
    Posts: 3,064

    I second that emotion!
     
  10. BigFish

    BigFish LawnSite Gold Member
    Posts: 3,064

    Bad ign. module/coil.
     

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