Changed the fuel filter, changed fuel regulator sensor. dual tanks fuel pumps work. starts and idels for like 20 seconds then dies. was funning for about 1/2 hour then started spitting and spuddering and then died.you can hear the fuel pump kick on for about 5 seconds. if you try to give it gas it boggs down and dies.
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do you have injector pulse durng initial cranking? you may have a bad cam shaft position sensor that "comes to life" when rpms are up. or an injector has a bad spray nozzle allowing fuel to flow into its cylinder,pulling the spark plugs and checking for any that may be "wet" or smell ''rich'' will help pin-point your problem.
Check your fuel pressure. It may be low, or losing pressure from a bad pressure regulator. A thorough test of your fuel system seems in order. (A pressure test can also detect a bad regulator, if it's done properly.)
hi i have a 1997 chevy tahoe that starts but won't stay running i have changed fuel pump, fuel filter,relay ,spark plugs, and just changed rotor and dis. cap ready need some help to figure this out please.