I just ran 6an lines front to back with a malloy fpr and supra TT fuel pump and earl's fuel filter. I went to run some fuel through the lines to clear it out before I hooked it up to the rails and win I turned the key no fuel came out the lines! I listned to the pump and it wasn't loud but it sounded on. Is the line coming out of the middle of the fuel pump assembly the feed line and the other the return line? or is the one in the middle the return line and the other feed? I can't figure out why it won't pump fuel through the regulator?

 

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What do you mean ?

 

Did you jumper the fuel pump in the diagnotics box and then turn the key to ACC?

 

Yea I ran the jumper and turned the key on and the fuel pump made noise but no fuel came out the fpr. I'm really at a standstill here. Got any suggestions of things to try or what it might be?

 

Start by checking this thread to verify that you have the fuel lines in the right order:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/fuel-line-help-516774/

 

Ok, I disconnected the feed line at the tank. and ran the fuel pump for a second and nothing came out? fuel pump doesn't work...but still makes buzzing noise? Does anyone have a picture of the wiring on the pump or something. I'm really clueless here why a brand new supra tt pump doesn't work?

 

pull it out of the tank and you should be able to find the reason it dosent pump. if it has hose connection it may have blowen off.

 

Ok, So I went to pull the pump assembly today and when I opened the hatch their was fuel syphoning out of the return line. So I plugged the pump in and kicked it on, and fuel came out the return side for about 5 seconds or so??? Anyway I can't see anything physically wrong with why the pump wouldn't work. maybe I got the blue and black wires reversed or something? Any help would be appreciated
Thanks,

 

I belive blue is power and black is grnd. You may have run pump wrong direction. Some people have tested there pumps with water outside the car, then dryed them and reinstalled.

 

get a multimeter and check voltage at teh pump connector, that is after you check continuity from the pump bracket connector to the pump itself. If you not getting voltage get the wiring diagrams out and start tracing the circuits.

 

Sounds like you have your lines hooked up backwards. So the pump runs, and fuel coming out of the return, but not the feed? You said no fuel came out of the regulator, did you check if you had fuel coming to the regulator?