[56pontiac]

My buddy talked to a retired GM mechanic. He seems to think the fuel pump that came with the car, and the used one I bought are both junk. I have a 30 day warranty on the used one. I just don't know how to test it. The guy at the yard said to hook up a 12V wire to the hot and the ground to a ground. I'm going to take the pump I took out of the car to the junkyard tomorrow and see if they want to test it.If it doesn't work, then I take the other pump out and try it. The car is at a friends house and it's 20 miles each way.So don't want to make a trip if I don't have to.My vehicle I use now is a 1977 Dodge M880 3/4 ton pickup 4 wheel drive with 4:10's. I get 8 MPG with the wind at my back going downhill. That's why it only has 66,000 miles on it. Again,thanks to all who help.It is VERY much appreciated.