Cold Start Problem FI 302
7/6/04, 04:26 AM
#1
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I posted this question in a different group, and didnt get any replys. Anybody help me? Please?
Transplanted '91 FI 302 into a Jeep. After it sets overnight it starts but lopes really bad. If I cycle the key 4 times to let the fuel pump build up it starts up fine and runs pretty good. After warm up all is well. It has to set for 8-10 hours to loose fuel pressure and give this symptom. Anyone ran across this before and fixed it?
Transplanted '91 FI 302 into a Jeep. After it sets overnight it starts but lopes really bad. If I cycle the key 4 times to let the fuel pump build up it starts up fine and runs pretty good. After warm up all is well. It has to set for 8-10 hours to loose fuel pressure and give this symptom. Anyone ran across this before and fixed it?
7/6/04, 05:55 AM
#2
GTR Member
Hmmm, never run across this problem. What fuel pump are you using?
When I turn the key (not starting the engine) on, I hear the fuel pump turn on for a second or two to build up pressure, then shuts off once the pressure is up to ~ 35 psi if I'm remember correctly. It seems your vehicle is lacking the pressure build up initially. Are you using the OEM fuel pressure regulator?
When I turn the key (not starting the engine) on, I hear the fuel pump turn on for a second or two to build up pressure, then shuts off once the pressure is up to ~ 35 psi if I'm remember correctly. It seems your vehicle is lacking the pressure build up initially. Are you using the OEM fuel pressure regulator?
7/6/04, 05:59 AM
#3
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Looks like you previously posted this question in the "Chat Forum". For an EFI 5.0 tech question, I'd think your best bet would be to ask in the Fox Forum(79-93 Mustangs). 
We're mostly "carburetor cowboys" in the Classics Forum...
We're mostly "carburetor cowboys" in the Classics Forum...
7/6/04, 07:58 AM
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He's gone ahead and made a post on this subject in the Fox Forum, so I'm going to close this one. If you have questions/comments on his problem, feel free to address it here:
http://forums.bradbarnett.net/index.php?showtopic=3136
http://forums.bradbarnett.net/index.php?showtopic=3136
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