I have a 72 240Z with a L28 turbo fuel injected swap. I have been working on the body and interior for about 18 months and when I went to fire it up, I could not get the old rail mount fuel pump to fire at all. I checked all the wiring and determined that the pump was bad and I figured that it had set up since it had been ran in about 1 1/2 years. I ordered a new pump from Summit Racing and installed in the same location with a new inline filter between the tank and the pump. I fired it up and it ran fine as I started the car and just eased around for about 30 minutes to circulate all the fluids and check for leaks in the aluminum radiator. I backed it in the garage and the pump has not fired since. I thought it was just a wiring short so I ran a new hot wire from the relay to the pump and even changed out the relay. It never dawned on me that it would be the pump until I chacked the power at the pump and it was reading 12.1 volts across the terminals. So, it seems that the pump is bad and I am going to return it to Summit and they are going to exchange it. My question is did I get a bad pump or do I have something else that is damaging the pump? The previous one had ran for years before I tore the car apart so it is not location I don't think. I am using gthe same wiring setup and the same ECU so I can't think of any new variables that would damage it. What are you thoughts and experiences? I was also wondering what pressure you guys were running on EFI setups?
