My mule 610 keeps getting oil in the carb and somehow getting gas in the oil. I've read about other people with the problem. Some say it's because the low speed operation causes a build-up in the cylinder that allows oil to pass through. But then how does the crank case keep getting gas in it? I've tried the following to fix it. Changed oil twice. Put on a new carb. Put on a new gas filter. Put on a new fuel pump. Run Seafoam at high RPM's for extended periods. I just changed the oil again and it did it again within minutes.. It chokes down, won't idle, and blows tons of blue smoke. Immediately after the first oil change and new carb, it ran perfect. That lasted less that an hour.

I'm at wits end. My only last thought is that is has an input valve that is not seating. I really don't want it to be that but what else is left. No hole in the piston because it runs so good for a short while.

HELP!

MikeT

 

Do you have a factory service manual for your ride?
Is there a crankcase PCV on these?