got a 92 camaro ,305 , no fuel pressure to throttle body . pump is working ,runs for 3 sec. with switch on ,also runs when trying to start. there fuel coming out of both sides of fuel filter. i blew out the supply line . so i pinched off the return line to get pump to build pressure and it worked 1st time, there was fuel to t/b. but car would not run on its on . it will run if you pour fuel into t/b. then tried to pinch line again and no luck . so i`m guessing its the pump does not having enough pressureto make the t/b work. please help, thanks .

 

TGO welcomes you!


I would rent a fuel pressure tester (actron unit) and varify the supply line pressure. If you see less than 9psi your pump is dying. A pump can run and miss lead you into thinking that is is okay. It will still provide a nice cone shape spray out of the injectors but will be an inadequate 7psi or less which will not keep your car running.

 

thank you ,i`ll try that