If piston rings are so worn as to allow raw fuel into the crankcase, increasing the oil/fuel level of the crankcase while running, IT WILL NOT RUN for the reasons I stated. At a state of rest, piston ring wear is insignificant and fuel can easily makes it's way past the rings.
Originally Posted by Music Man
Often times after an engine has been severly flooded, a engine in excellent condition will not start due to lack of compression caused by washdown of the cylinder walls ( the gas removes the film of oil coating the cylinder walls), compression can fall up to 50% or more. When this happens the spark plugs need to be removed and oil introduced into the cylinders restore compression and engine to restart.
3 Days Ago
Kicker making oil
My mariner 9.9 was choking a little during the last fishing trip of last season. It had made a ton of oil in the crankcase, filled up with gas not water. I flushed it out over the winter, it started right up and ran like a champ the last three trolling trips. I checked it tonight and its making oil again. Any thoughts on what is causing this?
Clearly the engine is running fine, therefore, the crankcase contamination is occuring at rest. It may exhibit some symptoms during starting and then clear due to a rich cylinder( may be not noticable since it is under choke anyhow) until the excess fuel is burned.