Autolube issue

[rambandit]

Hi all, Have just rebuilt a p200e engine, it appears that the autolube is not working correctly
i allowed oil to fill the pipe to carb with oil leaving the air bubble and upon running engine ( on pre-mix of course ) the oil was drawn in and air bubble disappeared as usual
Following a 20 mile run and removing engine cover i found the oil line almost empty.  Never had this before, has any one else...ideas please most welcome as i cant find any air lock as such and theres a full tank of oil
Cheers in advance.  Clive

[jedihunter]

I would try blowing air back down the oil line into the tank, then let oil flow back down the line. if it does, then no blockage there. Is your oil line old and hardened? could it not be sealing tightly on the tube going into the carb? Just some things to check...