Originally Posted by THETANK
My car was switched over to CARB and no longer uses the ECM. Could this have anything to do with it?
Yes, this has everything to do with it. The ECM runs the pump. Priming it is a function of the ECM getting powered on - so it will still prime. But running the pump after startup is a function of the ECM reading an ignition signal from the distributor (which it is no longer getting) - so the pump will not run off the fuel pump relay.
Now - alot of folks will still get a running fuel pump, from the OPSU circuit - but it can take 30 seconds or more of cranking before the OPSU gets pressured up to 'turn on' the fuel pump. THis all assumes that you still have your OPSU wired same as stock, and that the OPSU is working, and that the fuse beside the battery is not blown.
So - you either need to verify that the OPSU wiring is still all in tact, and that the OPSU is working, and that the fuse is good, and then have patience and allow the car to crank for a longer time so the pump starts running ...
Or, you need to get a 12v+ wire to that green/white relay wire so that when the key is on the relay activates and runs the pump ...
Or, you need to wire up the fuel pump with another method so that it gets 12v+ when the key is on.