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HAVE A 18 HP B&S OHV IT BLOWS OIL OUT DIP STICK AND FUEL PUMP?

I CHANGE OIL&FILTER,CLEAN VENT WHAT ELSE COULD IT BE?

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old guy668 years ago
you have a blown head gasket,also valves should be replaced,complete head assembly with gasket approx. 110.00.had the same thing on 18.5 hp briggs and could'nt find any help so I bought a new engine.then took the old one apart everything else was fine.
Capt. Howdy8 years ago
i had a ridin' mower do that. one of the valves was stuck.
something is leaking pressure from the engine into the casing where the oil sits - that pressure has to go somewhere, and its out the dip stick. Stuck valve, cracked casing, a few possibilities.
my exhaust valve was stuck partially closed and it allowed some of the exhaust to be forced into the crank case. i let the motor run and squirted a little tranny fluid into the carb. LOTS of smoke then the valve came unstuck.
righto - it was more a reply to the op, but you conveniently supported it :D sounds like our guest just needs to overhaul the engine :D
lemonie8 years ago
Have you filled with the correct amount of oil? Like others have suggested, I'd guess broken piston-rings. However I don't understand the "FUEL PUMP" reference - it doesn't have one - what are you referring to? L
NachoMahma8 years ago
. Sounds like bad rings or a scored cylinder wall to me.