I know this has been covered in the past but can i just run the symptoms past you chaps again.
Engine is fully rebuilt (new piston, rebore, crankpin, all new bearings). Everything clinically clean and flushed through, new recon oil pump from Drags which I stripped and cleaned out before fitting. Oil pipes all new, oil tank spotless. New pump gaskets from single spares and the additional washer fitted on the return side. Oil is SAE30 (recommended by Mr Jameson senior for running in)
When I first started it up last November everything was fine, no smoke ran lovely. Bike has been sitting since then
and when i came to start it today it bust into life first kick....but the exhaust smoke was incredible. Oil was returning to the tank in a continuous strong steady stream, there were only a few drips from the timing case breather pipes. Oil pressure gauge initially topped out at 15psi on a fast tickover. After what seemed an age (probably five to ten minutes) the steady return of oil became bubbles and the smoking dropped off. As it warmed up oil pressure gauge was 5 psi at tickover.
So it looks like the sump filled up with oil while it has been standing. Previous posts say that with a plunger pump this should not happen, so in my mind there may be a bit of dirt in the supply side seating in the pump or the recon pump is duff in that area. Before I go off and start stripping things down am I missing anything i.e is there any other way the sump can fill even if the pump ball valve is OK
I have the early setup so no additional valve behind the pump.