Small Engine Blowing Oil Out Breather at Alpha Blog


Small Engine Blowing Oil Out Breather. Fortunately this engine does not. I have been working on my old craftsman/roper (mid 80's) garden tractor with a b&s flat head 18hp twin engine model 422437. I have another craftsman with a similar prob but ill leave that out for now but the breather will fill the intake with smoke and kill the engine so i am trying to figure out best plan of approach on both. If that checks out, have a look at the breather assembly, and make sure there are no air leaks into the crankcase. But once it gets cold out, the engine will spew large quantities of oil out of the crankcase breather vent.

Hot Rods 454 chevy V8 blowing oil out the breather The H.A.M.B.
Hot Rods 454 chevy V8 blowing oil out the breather The H.A.M.B. from www.jalopyjournal.com

I have another craftsman with a similar prob but ill leave that out for now but the breather will fill the intake with smoke and kill the engine so i am trying to figure out best plan of approach on both. Some fuel has entered the engine where it has diluted the engine oil, and raised the oil level to the height that some was pushed out the breather. I have changed the oil and filled it with. You cannot leave fuel in the tank of any small engine over winter. Make sure the engine crankcase is not over full with oil. Under load (blade engagement) there is some serious oil blown into the carb from the breather. I have been working on my old craftsman/roper (mid 80's) garden tractor with a b&s flat head 18hp twin engine model 422437.

Hot Rods 454 chevy V8 blowing oil out the breather The H.A.M.B.

I have changed the oil and filled it with. Small Engine Blowing Oil Out Breather Blowing fuel or oil from the breather tube indicates excessive crankcase pressure, often caused by worn piston rings or clogged crankcase ventilation. If that checks out, have a look at the breather assembly, and make sure there are no air leaks into the crankcase. Under load (blade engagement) there is some serious oil blown into the carb from the breather. You cannot leave fuel in the tank of any small engine over winter. Make sure the engine crankcase is not over full with oil.