Kawi engine skip

Discussion in 'Mechanic and Repair' started by itteitj, Nov 2, 2007.

  1. itteitj

    itteitj LawnSite Member
    from RI
    Posts: 74

    I have a Kawi fh601v 19 hp with 964 hrs. This engine has always run good. I developed a skip in the engine with a loss of power while trying to mow. I think it may be fuel related or electrical. I flushed carb with cleaner and drained 1 tank and refilled with fresh gas. I also want to mention that this engine has had 2 sets of coils during its life. The skip sounds a lot like when I replaced the coils but want to be sure before ordering new ones. Also I did not take carb apart this time or drain the carb bowl. I would appreciate any advice as to how to proceed and what to check next. If I failed to post any info please advise. :confused:
    Thanks
    Tom
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    With the engine running pull each plug wire one at a time (with rubber handle pliers), If you pull one and the engine dies the other side may not be firing. Check that side for spark while cranking over the engine to verify before installing a new coil.
     
  3. itteitj

    itteitj LawnSite Member
    from RI
    Posts: 74

    I performed coil test as recommended and while engine was running I pulled right plug wire and nothing happened and then pulled left plug wire and engine stalled. If this means a bad coil, should I get 2 or just the bad one. What makes the coils die?. Thanks.
    Tom
     
  4. Jason Pallas

    Jason Pallas LawnSite Bronze Member
    Posts: 1,325

    Yes - replace that coil. It's your problem. A big culprit of coil failure is heat.
     
  5. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    I would just replace the one bad one, Jason is right with the heat being the issue. Kawi just uses a cheap made coil I suppose, Have never seen another engine eat coils like Kawi's.
     
  6. itteitj

    itteitj LawnSite Member
    from RI
    Posts: 74

    The new coils arrived and I installed them. The engine runs very well. I decided to go with 2 new ones and now I have a spare. This mower is my oldest "Z" and is set up with a blower and rear bagger. This is the time of year that I really need it up here is southern new england. As usual, thanks for the help.
    Tom
     
  7. itteitj

    itteitj LawnSite Member
    from RI
    Posts: 74

    Well, I ran the machine less than 4 hours and the right side coil failed again. So I think something is causing the coil to burn out. Any suggestions would be appreciated. :confused::confused:
    Tom
     
  8. itteitj

    itteitj LawnSite Member
    from RI
    Posts: 74

    Correction, It was the left side coil that failed both times. The right side is fine.
    Tom
     
  9. EMJ

    EMJ LawnSite Member
    Posts: 200

    Switch the coils and see if the problem follows. If it does then it is the coil. If not you have some other problem.
     
  10. GravelyNut

    GravelyNut LawnSite Bronze Member
    Posts: 1,594

    Sounds like a cooling problem. Anything blocking the airflow?
     

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