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LS1 fuel pump

This is a discussion on LS1 fuel pump within the General Help forums, part of the LSx Technical Help Section category; Anyone here successfully remove the plastic hoses from the pump to the top and the small one to the "jet?" ...

  1. #1
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    2002 Z28

    LS1 fuel pump

    Anyone here successfully remove the plastic hoses from the pump to the top and the small one to the "jet?" Can they be reused?

    Al 2002 Pewter Z28

  2. #2
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    DNBPM
    2000 UltraZ

    The small one you can just cut it above the fitting, that's what my new fuel pump directions said to do and to use a razor blade to cut the other one off. I'm having trouble installing the new accordian clear hose on the housing assembly. Good Luck on yours
    John Junkins

  3. #3
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    Here is where I am now. My fuel pump failure was the "flexible soda straw" hose. It split. Found out there is an SAE spec for in tank fuel line. SAE 30R10. NAPA has it in 5/16", part number H209, and in 3/8" H213. Here is the description from NAPA's info:

    Attributes:
    I.D.:.375" (9.52mm)
    Features & Benefits:Exceeds SAE 30R10 Rating & is Capable of Handling Gas
    Alcohol-Extended Gas or Diesel Fuel in Fully Immersed
    Mobile
    Stationary & Marine Applications. Aramid Fiber Reinforcement. Fluroelastomer Tubed
    Working Pressure:100 psi

    Measured the barb on the top plate and 5/16 is too small. Ordered 3/8, hope it fits

    Al

  4. #4
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    DNBPM
    2000 UltraZ

    The 5/16 is what came with my new Walbro 255 fuel pump and it a bitch to get on. Let me know how it turns out. And thanks for the info. I might go to NAPA and get a new one.
    Thanks Again,
    John Junkins

  5. #5
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    Al,
    Did you have any luck on your hose. I went to NAPA and they said the warehouse is out of stock. I need on and I called My GM dealer and they can't get the hose by itself. Any help would be greatly appreciated.
    Thanks Again,
    John Junkins

  6. #6
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    2002 Z28

    John,

    I also bought two FI hose clamps. I tried to get spring clamps, the ones made out of spring wire. They didn't have them. Later today I'm going to try the hose. As you know, the way the barbs are designed if you push the hose on, it's there forever.

    One of my concerns is the stiffness of the new hose. It has to bend as the bottom of the pump moves in relation to the top. At $30 a foot it should bend

    I'll let you know how it goes.

    Al

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