[MissMoppet]

Originally Posted by Mike Noc

Better to unplug the UBP, turn the key to position II and with your ear next to the open fuel filler pipe listen for a faint whirring.

I don't know about aftermarket pumps, but with the factory fit UBPs a failed ITP won't cause the UPB to fail. Bit of an old wives tail that one.

Thanks but my old woman has yet to grow one.