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Old 07-01-2005, 09:57 PM
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97firebird 97firebird is offline
LawnSite Member
Join Date: May 2004
Location: Oxford, CT
Posts: 41
kohler giving me hell

Oh, here is my problem..still....My 1992/3 Kohler Magnum 20hp motor has been blowing oil out of the PCV valve like crazy and leaking out of the valve cover gaskets...This past spring we rebuilt the following....pistons, rings, honed cylinders, valve job, valve clearance, etc. all new gaskets, new breather plate, breather gasket, and checked the oil pressure regulator. I am sure that I have the correct oil level and viscosity in the motor. All of this still did not solve the problem, although the motor runs beautifully now. Could it be valve seals (There are only valve seals on the intake valves, which I replaced, but have not run the motor with them in yet)? Valve guides? Have yet to check them but I have the specs...It seems as though the crankcase is becomming too highly pressurized and/or filling the valve area up and forcing oil out of the PCV. I have had it with this motor so any help would be greatly appreciated. Thank You
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