GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 3 of 3
  1. #1

    Default 88 c1500 fuel line issue

    can someone help me here is the story
    my truck runs on lpg now.. after building a new engine i want to put it back on petrol
    so heres my problem the person who converted it to lpg removed the fuel tank and most of the fuel lines
    i have bought a tank and pump and i will be running a holley carby instead of the tbi
    if any one can help i need to know how to run all the fuel lines from the tank to the carby including the return line and the breather ,,, any info would be greatly appreciated
    cheers

  2. #2

    Default

    If you were planning on ditching the stock TBI setup (a mistake in my opinion) you shouldn't have gotten a stock in tank fuel pump since it runs about twice the pressure the carburetor will use. I could tell you how to put the TBI setup back together, but adding a carburetor without a complete new in tank pickup and mechanical fuel pump on the motor is beyond my experience. You will have to regulate the pressure to carburetor pressure and have the return working to bleed all the extra fuel back to the tank so the pump doesn't overheat.

    Dorman makes the 2 rear halves of the stock fuel feed and return lines, nobody makes the front halves that I know of. The fuel filter is on the frame in between the front and rear half of the pressure feed line with screw on connections on both ends, and the front and rear halves of the return line just screw together in the same spot with a male/female connection. The breather line just goes from the tank to the appropriately marked port on the charcoal canister as I recall.

  3. #3

    Default

    Thanks 92WT
    Unfortunatley its not my choice to remove the TBI as some butcher who previously owned the car did!!!
    I have successfully set everything up
    1.. i used a stock tank and pump
    2.. i ran 3/8 flexible fuel line for the feed and 5/16 for the return and breather
    3.. i bought a HOLLEY adjustable fuel regulator with a return bypass
    4.. that runs to a 750 holley with a fuel pressure gauge
    5.. fuel pressure is set at abou 6 to 6 1/2 psi
    6.. the dizzy was already changed so its not the one that runs with the TBI i think its the HEI model
    it runs great just abit rich so once i sort the right jets out it will be better

Similar Threads

  1. 2002 Suburban Fuel line damaged where it hooks to fuel filter, any way to fix?
    By pelletman in forum Chevy SUV & Crossover Tech Forum
    Replies: 1
    Last: 07-11-2012, 06:50 PM
  2. 1989 C1500 4.3L - Stumped On Issue
    By blue80911 in forum Chevy C/K Truck Forum
    Replies: 1
    Last: 08-31-2011, 04:27 PM
  3. 1990 C1500 electrical issue happened today, please help.
    By vwracin2win in forum Chevy C/K Truck Forum
    Replies: 7
    Last: 08-18-2011, 06:12 AM
  4. 02 Yukon SLT 5.3L Flex Fuel, fuel line issue
    By TRyan9441 in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)
    Replies: 2
    Last: 06-02-2011, 12:19 PM
  5. Fuel supply line to throttle body issue
    By Dantheman96 in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 1
    Last: 03-04-2011, 09:14 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •