HELP PLEASE! FUEL LINE PROBLEMS

[ozgmg]

i have an 01 4.4 x5, after i park my car over night its always hard starting the next morning as if the fuel is having a hard time reaching the engine, we just replaced the fuel filter but still the same. also another problem i encounter with my car is that when the fuel tank reches less than 1/4 the fuel lines culdnt suck the remaining fuel in the tank so it's like running on empty already. need ur help guys! thanks alot!

[Big "J"]

Fuel pump.

Have the pressure checked on the fuel rail. I'm not sure of what the PSI should be, but if your starving for fuel, the pump could be the culprit. Next I would check your injectors to see if they're plugged. If this is the case you'd get a "service engine" light.

Good Luck!

[fast4d]

there's a schrader valve on the fuel rail on the engine. check the pressure there.

pressure should go up > 30psi when you key on engine off. even more psi when engine is running (around 50psi)