Fuel Pressure Won't change

[trbodon21]

Installed the Red Double Pumper last week. The car started right up and was running extremely rich you could smell the fuel from the exhaust. My fuel pressure gauge was reading about 39psi now compared to 30 psi, which I was running before with old pumps (stock pump inline with another outboard pump that is unkown). My Setup includes 83# injectors and is why the guy helping me tune the car had the fp so low. I figured that the higher fuel pressure was just because my old pumps had a differnet flow rate than the Red pumps. I also note that only one pump is hooked up right now. I tried to adjust the fuel pressure and it won't go down at all and it will go up slightly till about 40psi or so if I try to raise the pressure, but I can't get it any higher than that. So there is pretty much no response from adjusting the regulator. I was thinking maby there is a problem in the return line. I double checked all of the lines to make sure they were hooked up right, but I am going to check them again just to be certain. I was also thinking the regulatror may be no good, but it was working fine with my old pumps. Any ideas of what do do next??

 

[azgn]

sounds like both pumps are running at idle....that will cause the problem you are experiencing....just overwhelms the return line

 

[trbodon21]

How could both pumps be running if I didn't connect the power wire to the second pump?

 

[azgn]

are you sure? check the wiring

 

[turbosam6]

I've seen a bad regulator cause that too. But check that wiring though.

 

[trbodon21]

The pump in my car is the red armstrong double pumper kit. I may be wrong, but to my understanding one pump connects to the factory wiring and the other pump is hotwired to the alternator that is turned on by the hobbs switch. If the wiring from the second fuel pump is not connected to the alternator there will be no power to it. So the pump with that is connected to the factory wiring should be the only pump running???

 

[azgn]

what if you have the Hobbs wired wrong or at the tank?

or change the regulator and see if anything happens

or did you kink the return line when you dropped the tank?