when i took out the spark plug on my yardman tractor (briggs and stratton engine),and turned it over,there was a lot of engine oil coming out of the combustion chamber. when i put the spark plug back in, the engine will not turn over. can someone tell me what the problem is?

jef walker, April 2007

Sounds like you could at best have a plugged crankcase breather,at worst your engine needs overhauled.There should be hose somewhere on the side of the motor going up to the carb.-in case of the breather when you put the plug back in and cranked it the crankcase pressure couldnt get out.In case of the overhaul- all your compression is going past your rings and into your oil pan creating pressure through the whole engine and not allowing the piston to move

Bob R., April 2007