D2 pony started slobbering oil.

I think you are on your own with this one! The one possibility I can think of would be a blown top cover gasket that could allow oil to splash in between exhaust pulses. I would have thought this would produce increased crankcase pressure and perhaps even blow the dipstick out.

without turning the main engine you had no water circulating to cool the pony

My 2 cyl pony on my cat 12 did similar. I was cranking the main eng and it would not start. Pony started slowing down and died. Thought it was out of gas. Now back fires through carb and lots of crankcase pressure. Blowing oil out of air cleaner some.Fuel ok, Spark ok. Haven't cked compression yet. Elect start.

Sounds like tuckered out pony to me. Leaking rings and valves.

without turning the main engine you had no water circulating to cool the pony

Hi Dave-o,
seeing you had gas supply problems maybe check if your pony oil level is high and thin on the dipstick.

When the pony carby float sticks or the gas shut off tap is left on gas dilutes the minute amount of pony crankcase oil--always shut the pony down by turning of the gas and let the carby run dry, only use the mag switch to shut off the pony in an emergency or if you are going to re-start it again soon.

Usually with diluted oil the pony can be hard to start, but electric start can overcome this.

Do not run the pony with diluted oil or you run the risk of seized bearings etc.

Cheers,
Eddie B.

Information developed by OldMagnet and organized and posted by SWISHY is in the sticky post at the top of this forum page titled electric start conversion new parts sources. Scroll down to about post #72 and you will see a picture of a cover page. Click on it and keep clicking on the pictures you want to open or print.