Fuel Pressure Specs - Delphi Fuel Pump Ford Bronco 96 95 94 93 92 91 90 Ii 89 E-150 Fg0198

2005 Chevy Trailblazer service manual said the same 345-395 kPa (50-57 psi)

Find your test valve on your fuel rail (under the hood) and you will need a fuel pressure regulator gauge to check the pressure. You can also look up online the specs for the pressure recommended. You did not provide your size engine so i could not look up specs for the pressure. Hope this helps.

Generally speaking, modern gas fuel injected systems average 30-40+ psi. Older carburator engines only required 3-7 psi. High pressure in the injector helps atomize the fuel for better air-fuel mix. Check maufacturers specs and use proper tools to measure fuel pressure. Eye protection recommended.

Check fuel pressure at the rail. If it's not within specs, check the pressure relief valve on the fuel rail - the one that feeds fuel back to the tank.

If the pressure IS within specs, it's time to start seriously suspecting the car's computer.

With a fuel pressure gauge. If there is a test port called a schraeder valve on the fuel rail on top of the engine, it's easy. If no test port, you have to tee off the fuel line somewhere convenient (like right after the fuel filter) and hook your gauge up there. Hook the gauge up, make sure of no leaking, turn key to on, and read the pressure (it will read the same pressure in the line as at the fuel rail). Check pressure with key on, and then with engine running- if at the specs for your vehicle, it's good. If pressure is below specs, pinch off or pull off the vacuum line to the fuel pressure regulator, and see if pressure raises. If it does, try another pressure regulator. If no change, check the fuel return line for restrictions, check or replace the fuel filter, or suspect a poor performing fuel pump. On MPFI systems the pressure should be about 50 psi, but find the specs for your vehicle.

2001-2004 gmc sonoma 4.3 [X, W Eng.] fuel system specs: 60-66 psi when you turn the ignition key (fuel pump) on without starting the engine. If fuel pressure drops back down quickly after fuel pump stops working (works for only 5 sec.) then you have a bad fuel pump or leaking injector spider.

The fuel pump specs are 14 psi. and 20 gallons an hour.

Probably a bad fuel pump,Fuel pressure specs are 60 to 66 psi fuel pressure.You are at the lower part of the specs the engine wont fire.

fuel pressure specs are as follows:
5.0 &5.7L 60-66 psi
7.4L 55-62 psi

check the fuel pressure....there is a valve near the fuel pressure regulator that u can connect a fuel pressure guage to.under the hood on the right in the area of the brake master cylinder( right upper corner...( a line with a threaded valve)..check the reading and make sure they are in specs, i dont know the specs off hand but a service manual will help..if the pressure isnt in spec, replace the fuel pressure regulator..