Ok i have a 97 gmc pick up with 5.7 engine i just changed the fuel pump and filter it ran for about 6 mins and it went dead i checked the fuel pump and i have fuel pressure to the fuel filter but the truck still wont fire help anyone

If your 2008 Suzuki XL7 was running rough with sputtering and would not pick up speed, and you have already changed both fuel pumps, then there may be other possible causes for the issue. Here are a few things you can check:

1. Check the fuel filter: If the fuel filter is clogged or dirty, it can cause fuel flow problems and result in similar symptoms. Try replacing the fuel filter to see if it helps.
2. Check the fuel pressure: Use a fuel pressure gauge to check the fuel pressure at the fuel rail. If the pressure is low, it could indicate a problem with the fuel pressure regulator, fuel injectors, or other components.
3. Check the spark plugs: Worn or fouled spark plugs can cause misfires and rough running. Try replacing the spark plugs to see if it helps.
4. Check the air filter: A dirty air filter can restrict airflow to the engine and cause poor performance. Try replacing the air filter if it's dirty.
5. Check for vacuum leaks: Leaks in the vacuum system can cause rough running and poor acceleration. Check all vacuum hoses and connections for leaks or damage.

If none of these solutions work, there may be other underlying issues with the engine or other components that require further diagnosis by a mechanic.

have you changed the fuel filter and emptied the gas tank and put fresh gas in? Stale gas will not start as well as fresh gas and there could be water from condensation in the tank.

pump pressure is too low
should be around the 22,000 psi mark needed to crack the injectors
indicates that the there is a fuel supply problem to the pump or pressure regulation from the pump

Lets start at the beginning. Did anyone check fuel pressure before and after replacing the pump ?
Has anyone checked the fuel pressure regulator and the injector spider ? The 4.3w engine uses a spider with one injector that supplies all 6 cylinders. And it runs at 65psi or more.

My 97 Suburban had a similar problem. Would not crank on a regular basis. Replaced spark plug wires, plugs and rotor cap. Vehicle cranked and ran just fine, plugs were in poor shape. Checked fuel pressure, above 55psi with engine running or just the switch turned on. Immediately after switching engine off the pressure would bleed off to "0" PSI. Otherwise everything OK. Problem solved, so I thought. A couple days latter I had to make a road trip from Mobile, Al to Fort Meyers, Fl when cranking problem re-occurred after approx. 100 miles into trip. I stopped at parts houses on the way to ask questions and to obtain their best ideas, at times it would take 30 minutes before engine would again crank after making a stop. I replaced almost all of the sensors. Finally made it to Fort Meyers that night. Next morning vehicle was dead would not crank no matter what I tried. Fuel pressure OK. Only thing left to replace, Fuel Injector spider system. Problem solved.

If your engine light is on, check for codes. Sounds like fuel pump relay.

GM used four different engines that year. Which one do you have

check fuel filter and fuel pump. replace if not functioning.

Will it restart warm if you hold the accelerator to the floor?

This definitely sounds like a fuel pump/filter issue. Good news if it's the filter, it's only about 10 dollars to buy a new one and about 5 minutes labor, including jacking up your car.

Fuel pumps cant be a pain in the arse at times, others are fairly easy. Best way to determine if it's the fuel pump, run over to Canadian tire and pick up an ohms meter. Test the fuel pump that way.