hey i have a 94 z28 and i just changed the fuel pump,regulator, and the filter. now when i start the car it will start then die a couple seconds later. checked the pressure with key on not running and nothing start it and it will read like 20 or lower. any ideas on what to check or what to do

adam

 

anyone have any ideas?

 

Cycle the key a couple of times (without trying to start it) and see if the fuel pressure build up (should be closer to 36 - 40 psi). Also check to see if it bleeds down quickly. If it bleeds down quickly you have an issue with:

the internal check valve in the fuel pump
leaking fuel pressure regulator
leak in the fuel line system

The car won't start/run with only 20 psi of fuel pressure.

 

I'm a buddy of Adam's and we have replaced the pressure regulator, fuel filter, and just installed a 255 pump. I also hooked up my auto xray and it seems as if everything is checking out ok. Yet the car wants to run for about a minute and then starve itself and die.

 

Anyone have any idea what else could cause the car to run out of fuel like it is?

 

anyone have any more ideas i need to get this thing running