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my 97 f150 4.2L keeps stalling on acceleration. It ran fine this morning then my wife put 20 dollars of fuel in it and drove 30 miles to her destination with no problem. on her way back the truck started bucking bogging down and acting like there was a fuel problem but it didn't kill. I checked for codes there were none. I removed the fuel filter on the rail and replaced it with a new one. Now it will idle fine with no miss but if I give it gas it kills. I checked the codes again there are none. I also checked to make sure there was fuel coming from the tank when I turned the key as well as making sure I heard the fuel pump kick on when I first turned the key.I am leaning towards water in the fuel,i didn't see any trash come out of the old filter, however I am not sure, anyone have suggestions. I need ideas fast I have a 175 mile commute to and from work.thanks ya'll
anyone have any ideas? Now since the engine has cooled off it will not stay running either.It runs for a few seconds and quits. How long should the pump run when I turn on the key? I can barely hear the pump turn on with my head behind the tire on the driver side and it runs for about a second then seems to fade away. where do I apply a pressure gauge is there a shrader ? and what should the pressure be.
Last edited by therigwelder; Mar 10, 2015 at 05:40 PM.
Reason: more details
Key on, no crank only runs the pump about 2 or 3 seconds.
At cranking the pump is turned on full time.
The test port is on the fuel rail driver side.
Use gauge, expect about 35 psi.
Good luck.