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Thread: Fuel Vent Line

  1. #1
    Join Date
    Feb 2018
    Location
    Massillon, OH
    Posts
    2

    Fuel Vent Line

    89 c1500 Swap to 5.3
    What do should I do with the third line in the fuel sending unit? It use to run to the charcoal canister, Iím assuming I just vent it, just run a hose and tie it up? Need a filter on it? Iím not sure and I havenít seen any comments in other threads.

  2. #2
    Join Date
    Sep 2011
    Posts
    262
    I have always just left the metal line open ended under the hood, could always run rubber line off and put some kind of vent on it like is on the rear end hose vent tube

  3. #3
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,112
    If you don't want it exposed and sometimes smell fuel vapors, run it to the air filter or near it.

  4. #4
    Join Date
    Apr 2017
    Location
    Northeast Ohio
    Posts
    28
    I was just going to cap mine. Is that bad?

  5. #5
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,112
    Quote Originally Posted by 1BADBOWTIE View Post
    I was just going to cap mine. Is that bad?
    it could be, the tank won't vent - > vapor lock

  6. #6
    Join Date
    Apr 2017
    Location
    Northeast Ohio
    Posts
    28
    Quote Originally Posted by farmtruc View Post
    it could be, the tank won't vent - > vapor lock
    My tank is the newer one with the built in vent that connects to the fill tube.

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