fuel del.

[mariposa_43]

I have been posint stuff on here and i think all of you who has helped me. My truck is still not runnin we changed distributer and the nut kit.. my care only starts with starter fluid sprayed in the intake. it has fire and everything is lined up as per the firing and such. i need other ideas please. message me on her or on yahoo im id is mariposa_43
Thanks
Shannon

[Bone Crusher]

Sounds like the fuel pump

[mariposa_43]

do you know how to check it or what the pressure is supposed to be. I have an ascess panel so i can easily pull it out the gas tank.

[mafiacustomz]

well my dad has a efi 4.3 in his astro and the psi is 65 you can get a fuel pressure tester at any auto store and they can tell you how much psi

[Bone Crusher]

Or you can lift up the access panel, turn the key to the on position and see if you hear the pump turn on to prime the line.

[mafiacustomz]

if it is turning on it still might be bad and not pushing the right psi its just best to buy the $35 psi tester i have had 2 or 3 run but not pust the right psi out of the box

[Bone Crusher]

I actually had good PSI and the fuel pump turned on, yet it was still bad. I replaced mine with a Walbro 255.

[mafiacustomz]

we put the bosch upgrade them thing are $95 thats crazy gm needs to keep the good quality parts but make them cost less

[mariposa_43]

ok i already checked the psi i have perfect psi fule pump is fine so only thin i can think is the new nut kit or relay i put in the uper intake is bad.... or i have no clue

[mafiacustomz]

well after spark fuel and timing you never know what it could

[BigTruckDrivah]

did you check for leaks while the plenum was off? The fuel pressure regulator will bleed off sometimes, the poppets could be leaking? I always check initial pressure, then turn the truck over and watch the gauge to see if the pressure still continues to stay up. Ive seen this problem a bunch of times on CPI engines. What is "perfect fuel pressure"? Is it 55-60 with the key in the "run" position without starting the truck? It should hold that pressure for a while with out bleeding off.

[BigTruckDrivah]

http://www.s10planet.com/forum/showthread.php?t=4695
read all this.

[BigTruckDrivah]

Problem lies in the pump or fuel pressure regulator.

[mariposa_43]

Well she is running. Thanks to all of you how gave me ideas and hints on what it could be. My idea was some how the injectors wernt working cause she was not trying to turn over unless ether was srayed in the intake. and i knew my fuel delvery was fine. friend suggested wiggling the wire to the injector to see if connection was bad.. well for some reason the dummy head who owned the truck before me was splice happy... it actually had two splaices in it, and one came out. so again think all of you for everything.
Shannon :D

[dave1182]

Good deal

[mariposa_43]

thanks i got her running it was a spliced wire that went to the injector so tec. she was not getting fuel got her running she is still alittle rough. but is a lot better. thanks

[BigTruckDrivah]

Did you have 2 threads for this same problem? Sneaky sneaky

[dave1182]

thanks i got her running it was a spliced wire that went to the injector so tec. she was not getting fuel got her running she is still alittle rough. but is a lot better. thanks
Like i said ever need some help let me know, i'm on the southside of Houston.

[mariposa_43]

Did you have 2 threads for this same problem? Sneaky sneaky

actual if you read one it started with a different issue and you read the start of thsi one it has a diffrent issue. but i combined them into one after i relised they are one in same just to starting points with same ending

[BigTruckDrivah]

Then I read correctly