steve1 said:Problem solved collapsed petrol tank, when i removed the sender the post had been bent at 90deg, unable to fit new sender because the base of the tank had collapsed inwards.
So this was a problem that had been bodged in the past.
All fixed now but it took my new exhaust box money, will have to wait till christmas. (anybody want to invest in my christmas list)
Im glad its sorted .. but just want to make sure the tank vent side has been checked .. or it might happen again
A big inrush of air when removing the fuel cap would indicate you still have a problem.