ford_fanatic
Registered User
Hey guys I have an 89 7.8, the lift pump went out on it. Does anybody know the psi and gph I need to supply that with to use and electric pump? Or is it interchangeable with a lift pump from a 91 or newer 7.8? And does the pump can care if there is no lift pump there or with that **** it all up, I mean the pumps on Cummins have the spot just plugged, just not sure if it's relying on it to keep it in place or not since I don't know what is on the inside of that plug. Thanks