Fuel system i put new fuel pump on and tune up but it still won't start.

SOURCE: 1997 GMC K1500 4x4 5.7 ex.cab SFI injection system

Did you check the fuel filter?
or possably the catalitic converter is cloged, check the exhaust pressure.

SOURCE: 1995 jeep cherokee sport

check for cloged fuel filter and check for clogged fuel injectors

SOURCE: 1997 GMC K1500 4x4 5.7 ex.cab SFI injection system

Hey there boatright33,

A few things things immediately come to mind.

There may be a problem with the engine controller. You could check the ODBII onboard diagnostics. Auto part stores will usually do this for you at no cost.

When you pulled the ones that were/went bad, how did the filters look? Could there be particulate matter still in the tank causing them to fail.

I always put this one off until last. Check the injectors. Are they gummed up?

Let me know what you find out
Mike

SOURCE: 2002 kia sedona won;t run

Kia have somewhere announced technical fault and are well aware of it something to do with an 'evaporator and that fact that your coolant temp is being misread at 45 degrees or something'. This is a recent discovery and so you may need to contact Kia, your local dealership may proabably be unaware. Check out the forums type in Kia problems into google and look for your problem.

SOURCE: i put a new fuel pump in and still wont start

ok if the fuel pump is energizing and you can hear it turn on then the pump is working fine and you probably have a restriction. i would replace the fuel filter. when you replace the pump did you replace the strainer on the pump? if not then thats where your problem lies. also could be the fuel pressure regulator also. there is a schrader port on the fuel rail try taking a pen and press down on the core to see if fuel squirts out. or connect a fuel pressure guage to the port and see if you have the right fuel pressure. it should run between 35 and 47 psi