hi, odd one which got me baffled, i just removed n refitted engine, about 6th one iv done, only this one wont prime on fuel now. check all fuses, pump, powered it up using 12v feed, pump out of car. has a toad imobiliser which i think is issue, opens n closes car, gives me igniton but no pump. relay seems ok.

any ideas?

 

Have you tried a direct feed from the battery all the way to the pump?