Can-am oil pump

[fogrider]

My Bombardier smokes like hell for the first 200 yards. I've found that oil is passing through the pump somehow and going into the sump, I can drain a small amount of neat oil out after being stood a while. It's a Mikuni pump, but no serial numbers that mean anything so I can't track down a repair kit or what Japanese bike they belong to.
Can anyone help out here please ?
Regards all, Terry.

[Wirralman]

I've sent you a Private Message , see link at top of this page

[Jon P]

Are you sure its two stroke oil? I had the center gasket develop a small leak letting in gearbox oil. On over run the crank is under a partial vacuum, so can suck oil past dodgy gaskets and seals, when the engine is nice and hot it can sort of cope with the extra oil and not smoke excessively. When you are ticking over after a run you suck more oil from the gearbox creating smoke on start up. I think there might be one or two seals that can let the oil past as well?
Obviously if that is the case it will be using gearbox oil

[ZIP TIE]

As said check it’s not gearbox oil,
It’s very common for two stroke crank seals to fail with age causing this.