serious fuel problem!!! please advise.
09-12-2008, 06:40 PM
#1
serious fuel problem!!! please advise.
my truck had a walbro fuel pump and LT headers, i took off the headers and put stock manifolds and cats back on and the truck started popping and dying when i idled for about 4 mins and i would give it gas and it wouldnt do anything but die. so i bought a new stock fuel pump off ebay and drove it and when i got to exactly 3000 rpms it bogged down and wouldnt go unless i stayed below 3000 rpms then it drove fine. so then i put a new fuel preassure regualtor on and it still does it at 3000? i also put 2 new o2 sensors in it last week. so now i have a new problem where it wont go above 3000 rpm ever since i put a new pump in it?? please give me some ideas because im about to push it off a cliff
09-12-2008, 07:00 PM
#2
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my truck had a walbro fuel pump and LT headers, i took off the headers and put stock manifolds and cats back on and the truck started popping and dying when i idled for about 4 mins and i would give it gas and it wouldnt do anything but die. so i bought a new stock fuel pump off ebay and drove it and when i got to exactly 3000 rpms it bogged down and wouldnt go unless i stayed below 3000 rpms then it drove fine. so then i put a new fuel preassure regualtor on and it still does it at 3000? i also put 2 new o2 sensors in it last week. so now i have a new problem where it wont go above 3000 rpm ever since i put a new pump in it?? please give me some ideas because im about to push it off a cliff
09-12-2008, 07:09 PM
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a bad mass air sensor could do that also. need to monitor more data. need more info. stopped up exhaust also. loosen the y-pipe at the manifolds and see if anything changes.
