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Chris (aka-Moose)
Chris (aka-Moose), Technician
Category: Car
Satisfied Customers: 1176
Experience:  16 years of experience
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There, i hav aproblem with a 93 ford F150 4.9lt engine

Customer Question

hi there, i hav aproblem with a 93 ford F150 4.9lt engine stall after 1 mint running then i try to start thengine start righ up and stall again after 1 min.. i just replac, fuel filter, spark plug, distribuitor cap and rotor and still the same
Submitted: 2 years ago.
Category: Car
Expert:  jazzmaster replied 2 years ago.
ho, have you checked for a vacuum leak ?do you get a high idle and then it stalls ?
Customer: replied 2 years ago.
the engine run norlaml at idle, i press gas and runn normal
Expert:  jazzmaster replied 2 years ago.
was the old fuel filter dirty /clogged ?
Expert:  jazzmaster replied 2 years ago.
do you hear the fuel pump come on for 2-3 seconds each time you cycle the key from off to the run position (not cranking the motor over ?
Customer: replied 2 years ago.
yes i hear the fuel pump for 2- 3 second
Expert:  jazzmaster replied 2 years ago.
ok, I think the issue is fuel related and even though you can hear the pump come on ,,the fuel pressure should be checked with a fuel pressure tester gauge tool.
the fuel pressure should be 50-60 psi when you first turn the key to the run position and then stay close to that reading for at least 4 minutes or so .it is normal for it to drop 10 psi when the key is turned off ,but for the most part it should read at least 50 psi after 4 -5 minutes .
also, it would be good to have the tester still hooked up and see if the fuel pressure drops down low just before it stalls ..
there is also a hose going to the fuel pressure regulator on the fuel rail(on the motor)
pull that hose off and see if it looks wet from gas or gas is coming out the vacuum fitting on the fuel pressure regulator ..
Customer: replied 2 years ago.
ok,,, ill keep u update
Expert:  jazzmaster replied 2 years ago.
ok, thank you .
it is tougher with these stall and start right back up issues .
it is possible that an electronic part is failing as well.
but it seems to me that it is fuel related .
so let me know what you find with the fuel pressure and if it holds //
Expert:  jazzmaster replied 2 years ago.
do you still need assistance with your issue ...jazzmaster ..
Expert:  jazzmaster replied 2 years ago.
hello, are you still needing help with your car or did I help you ?
Customer: replied 2 years ago.
Sorry. I haven't work on the yet. I will keep update tomorrow.
Expert:  jazzmaster replied 2 years ago.
ok, thank you
Expert:  jazzmaster replied 2 years ago.
did you get a chance to work on this ?
this question may close soon and then I wont be able to help you ,so please let me know ,Thank you so much ...jazzmaster ..
Customer: replied 2 years ago.
What I just did installed a new distributor. But I think I lost the timing. How I can set up properly
Expert:  jazzmaster replied 2 years ago.
I am answering on your other post