First thing came to mind was leaky float needle int he carb. Liquid gas
going into the piston, and past th e rings.

--

Christopher A. Young
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"Floating Mind" wrote in message
...
18 hp Briggs & Stratton, 2 cylinder. There is gas in the crankcase oil,
and also oil coming out of the driver's side exhaust port.

I pulled the cover that exposes the valve springs and both valves seem
to be moving correctly, but I haven't pulled the head to see if the
valves are closing completely yet.

Any ideas/suggestions?