OK I have posted before on some wiring issue I had and was given fast and helpful advice so here I am again. I have a 91 Camaro 5.7 tpi. I noticed that I didn't have enough fuel pressure at the shedder valve so I replaced the fuel pump , fuel filter and sock ( for fuel pump). Tried cranking the car over and still noticed that my fuel pressure was low. The pressure jumps up to like 16psi with the key on but drops immediately to like 6-8 psi. Is there something else that could cause my fuel pressure to drop. The fuel pump is a airtex e3210. The car was originally a 305 TBI and I installed a crate 350 tpi into it if that helps.

 

Did you replace the small piece of fuel line between the pump and sender. They are known to split and thereby reduce significantly the pressure. Need to use Submersible Fuel line for this part of the install (SAE 30R10 spec).

 

Maybe also take a look at your FPR...pull the vacuum line, see if it smells like gas.

But 16 PSI is about right for a TBI pump, IIRC...sure you got the right one?...maybe verify the pn vs specs.

Also check the dipstick, see if you're "making oil"..possible after wiring changes you have the injectors grounded, hence all open and dumping fuel in the engine...although I'm not sure a 45-50PSI pump would only get to 16 PSI if that occurred.

 

Clamp the return line and see if the pressure goes up to spec.
If it does, the reg is leaking fuel

 

Kk I'll try those suggestions out as soon as it stops raining try and I'll get back with u guys with my findings

 

never EVER buy a airtex fuel pump ,they are junk right out of the box.with a average life of 6 months. and yes it does sound as if you might have gotten a TBI pump,double check the part #.and I have also found that "pulsator" thing between the pump and the sending unit to be a problem. I bought the best fuel pump that NAPA had, and I have 5 years and 64,000 miles on it with no problems.good luck and let us know how it goes

 

ok I got it going. it ended up being the hose in the tank that u guys were talking about. it had a slice in the center of it. the car starts and runs good but my problem now is that with the car running when I hit the brake the car instantly dies , and im not sure where to look. any tips or suggestions? oh and thank you all for your previous help

 

If it is dying when you come to a stop, then it may be your Torque Converter is not unlocking. Could be a bad solenoid, or a bad switch. Usually the solenoid.

 

No it doesn't die when coming to a stop the moment I push the brakes to put the car in drive it'll shut down but I noticed today that when I press on the brakes my check engine light turns off like it has a loss of power

 

Sounds like you may have some bad grounds. Are the ground wires from the ECM attached to the rear of the heads? Check all grounds.

 

Grounds could be issue as well, cleaning and tightening them never hurts.

Airtex = crap.

Check that you have 12v at fuel pump at a minimum.

Jump the fuel pressure relay with the return line clamped off and see what happens.

Regulator usually won't make pressure drop that low since they get a small tear and leak vs. disintegrate. Same goes for a leaking injector, they usually leak, not become a fire hose.

Your car has a schrader valve not a shedder valve

 

Ok i got it. It ended being of the wires i ran was connected to the wrong wire. But i got it running and was able to put it in gear and move it w/out it turning off.Now i have to wrap the wires and get the exhaust installed. Thanks again for all of ur advice and suggestions