18.5 els500 Briggs & Stratton, oil in gas
I have a Huskee lawn tractor with a B7s 18.5 hp els500 engine on it. It would start and run for about 10 seconds, blowing smoke and oil out the exhaust, then stop running. Further inspection found a large amount of gasoline in my crankcase. We changed the oil and now it runs good. My question is how in the world would that much gas get into the crankcase? My oil was so thin it was running through into the cylinder and drowning out the spark. Any ideas?