Fuel leaking into crankcase

Discussion in 'Mechanic and Repair' started by Brad Ent, Oct 1, 2007.

  1. Brad Ent

    Brad Ent LawnSite Member
    Messages: 228

    We purchased a used trac-vac unit w/6 HP Kohler that was originally mounted on at Exmark ZTR.
    The owner indicated that the unit may need a carb rebuild since it had been in storage for a couple of years.
    We rebuilt the carb and tested and bench tested the unit prior to installing on our Bobcat ZTR.
    Runs good all is well!
    Pretty straight forward install.
    A couple of days later we went to test this unit out and discovered all the fuel had drained out of the gas tank into the crankcase.

    Will this occur if the engine is not mounted level??
  2. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    It doesn't have to be exactly level, Go back into the carb and check for any trash. All it takes is one speck to keep the needle from seating.

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