Originally Posted by The Dro
Doode... in series... not on a Series.
Fuel tank -> electric pump -> lift lump
What's the benefit of installing both together?
doode, one or the other not both... on a drawing board you use the electric pump to bring fuel
from the tank to the lift pump, then the lift pump provides the amount of fuel the ip demands.
ip runs 3 to 10 psi intake (output to injectors is much higher), the electric is constant non variable pressure .excess pressure is then returned via return line to the tank.
thus in real application while not causing damage to the system, it is counter active to use both as at idle the manual pump will act as a dam much more than off idle speeds.
A word to the wise, a mechanical pump will leak but not stop working, electric will shut down completely upon failure.
not against them simply a shot of reality.