10732gt

i have a 1991 gt it is at 10 degrees of timming and at idel runs 40 pounds of fuel presure every time i drive it it cuts out at the 4000 rpm range and chugs
the it will either clean up or wont re start for a while it dose start but wont stay running
the flange on the headers is glowing red any ideas ??????????????

VigCS

Could be a bad fuel pump.

randy78045

40 lbs presure doesnt sound right... or is it?

10732gt

when a fuel pump goes bad dont they gust stop are can they lose presure at higher rpms ????????

bernout

i ran 40lbs of fuel with a 255 lph fuel pump and it worked great.

i tried to put the injectors and the pressure regulator on a 5.0 with a stock fuel pump and left the pressure at 40.
the headers started turning orangeish in like 15 seconds while i was about to make sure the timing was right with a timing light.
may make me sound like an idiot but we put a 255lph fuel pump in 10 minutes later and it ran perfect.

my timing was near 14 though

id get a better fuel pump

VigCS

I'm thinking your pump is fine when you first prime it, then it dies overtime to the point where it won't restart after cooling down.

94RoadRacerGT

It is a ford LOL J/K. My buddys 90 GT had a clogged fuel line but it didnt bog out until 3500-4000 RPMs kind of like your situation. Not sure about the flange on the header though.

grabbem88

sounds like vapor lock to me...if pump is stock change it.....first you need to mount a gauge so you can safely watch it at those rpms..

black89gt

are you still running cats? your cats could be clogged up. go get them checkedo ut.

10732gt

thanks everyone for the help i think i will drop in a new pump