27hp Generac , fouling plugs

Discussion in 'Mechanic and Repair' started by Floridalandcare, Aug 20, 2011.

  1. Floridalandcare

    Floridalandcare LawnSite Senior Member
    from Tampa
    Posts: 314

    Generac is on a 60 dixie , plugs keep fouling . Plug tips are a white color . Replace and run fine for 20-30 hrs then same problem. How do i adjust mixture . engine is a vert shaft.
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    There's no adjustment for the high speed circuit, I would spray carb cleaner around the intake gaskets while running. If RPM's pick up replace the gaskets. Also pull the cylinder covers and check for debris in the fins causing overheating.

    You are running NGK BKR4E plugs right ?


    [​IMG]
     
  3. Floridalandcare

    Floridalandcare LawnSite Senior Member
    from Tampa
    Posts: 314

    Ive been running champion plugs. Another mechanic told me to run the ones you mentioned.This machine at idle will just pop and pop . Is there a correct gap for this engine. Thanks in advance.
     
  4. Snyder's Lawn Inc

    Snyder's Lawn Inc LawnSite Platinum Member
    Posts: 4,541

    I have one would foul the plugs I was told needed the values set
    Thinking ok
    The dealer was right stop fouling plugs
     
  5. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Put the NGK plugs in and check the valves like Snyder's mentioned, Should be .003" both intake and exhaust.....
     
  6. Floridalandcare

    Floridalandcare LawnSite Senior Member
    from Tampa
    Posts: 314

    Ill set them tomorrow . At least this enigine isnt a knuckle buster .The valley is pointing towards the back with easy access to both heads. Thanks guys.
     
  7. Sharpcut 1

    Sharpcut 1 LawnSite Senior Member
    Posts: 450

    .022-.025 plug gap at most, and get rid of those Champions. Generacs hate them.
     

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