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  1. #1
    Join Date
    Apr 2008
    Location
    Lebanon TN
    Posts
    116
    Hey Man. I have some bad news for you. I had the same problem about a month ago. My fuel pump went out, left me stranded 40 miles from home, I had the fuel pump replaced and everything was fine until I filled up again. I did not even make it home b4 it started acting up. Like you I thought I had bad gas so I dumped in some HEET to take care of the problem, only it did not help so changed the fuel filter. I started the truck everything seemed fine until I got in it to go to work, about half way there it started again!!! I took it back to the shop. I only had 30 psi fuel pressure and when you reved it up the presure went down. The new fuel pump had failed. B4 you do too much more to the truck, check the fuel pressure I think you will find it low.
    Chris S The GoFastPadre 00 Sierra ECSB Z71 Mods so far Headers Dual HFC's Flowmasters K&N CAI and much more to come. 06 Grand Prix no mods yet

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    A common mistake made when installing a new pump in an OBS truck is the line connecting the pump to the fuel tank module. You MUST use a high pressure rated fuel hose rated at over 80PSI burst pressure otherwise it may split. I also put two hose clamps on each end of the hose to keep it from slipping off under pressure.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
    Join Date
    Mar 2004
    Location
    KY
    Posts
    208
    whats the pressure its spose to be at idle and at throttle? ill put a pressure gauge on it and see where im at, if the pressures are ok then i guess its plugs or the fuel?
    96 Silverado rcsb
    5.7l Vortec
    Exterior: 2 inch drop shackles, Centerline Titan 20" Wheels, clear lights, Debadged.

    -Exterior to come: 2-4 drop, Tinted windows, Cowl hood, Green Calipers
    -Performance mods: Flowmaster True Dual exhaust
    -Performance to come: Tune, CAI, Cam, Spray, Posi, gears, stall, headers.

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