Oil leaking out muffler Briggs Oppy 17hp

[mwhitnell]

My mower stopped and now oil is leaking out muffler. A lot of oil.

 

[Auto Doc's]

Will it crank back up or is it locked? The description sounds like catastrophic engine failure.

 

[Rivets]

Or it could be that the float needle is stuck open and the crankcase is now filled with gas. Pull the dipstick and check to see if it is above the full mark and smells like gas. Also, remove the spark plug, ground the plug wire, put a rag in front of the spark plug hole And turn the engine over. If fuel comes spraying out we’ve found the problem. Report back your findings before proceeding.

 

[Scrubcadet10]

Or it could be that the float needle is stuck open and the crankcase is now filled with gas. Pull the dipstick and check to see if it is above the full mark and smells like gas. Also, remove the spark plug, ground the plug wire, put a rag in front of the spark plug hole And turn the engine over. If fuel comes spraying out we’ve found the problem. Report back your findings before proceeding.

Would a hole in the pump diaphragm cause this too?