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Fuel Issue 2003 Peterbilt

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by NightWind, Nov 12, 2023.

Page 2 of 3
  1. Nov 13, 2023 #11
    NightWind

    NightWind Road Train Member

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    NightWind, Nov 13, 2023
    NightWind, Nov 13, 2023
    #11
    Last Call Thanks this.
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  3. Nov 13, 2023 #12
    NightWind

    NightWind Road Train Member

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    No fuel tank heaters
     
    NightWind, Nov 13, 2023
    NightWind, Nov 13, 2023
    #12
    Oxbow Thanks this.
  4. Nov 13, 2023 #13
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Speaking of each tank individually, if one tank is overflowing, then either the fuel supply on that tank is plugged/not working, or more fuel is being returned to that tank.

    Possibly you have two seperate issues? Is the fuel level on one of these tanks at the top? You pull the cap and it's overflowing?
     
    Big Road Skateboard, Nov 13, 2023
    Big Road Skateboard, Nov 13, 2023
    #13
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  5. Nov 13, 2023 #14
    Arctic_fox

    Arctic_fox Experienced mx13 execrator

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    Pretty much just the bog standard off the shelf fuel line from a local place. Got a 50 foot run and just cut to size. Also got a bunch of new connectors and fittings from pete.
     
    Arctic_fox, Nov 13, 2023
    Arctic_fox, Nov 13, 2023
    #14
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  7. Nov 13, 2023 #15
    062

    062 Road Train Member

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    One tank taking more fuel than the other could be a cracked pickup tube.
     
    062, Nov 13, 2023
    062, Nov 13, 2023
    #15
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  8. Nov 13, 2023 #16
    NightWind

    NightWind Road Train Member

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    The tank is not overflowing but the passenger side is holding more fuel when I fill up. Both tanks at the Caps are losing fuel
     
    NightWind, Nov 13, 2023
    NightWind, Nov 13, 2023
    #16
  9. Nov 13, 2023 #17
    Last Call

    Last Call Road Train Member

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    Might try this. Put a light film of grease around the inside of your fuel caps put them back on then take them off and see if there is a grease ring around the tank where the cap sits that should tell you if the cap is sealing tight.
    A mutual acquaintance told me about your issue.
     
    Last Call, Nov 13, 2023
    Last Call, Nov 13, 2023
    #17
    Feedman, NightWind and Oxbow Thank this.
  10. Nov 13, 2023 #18
    NightWind

    NightWind Road Train Member

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    I'll see about that I'll let you know
     
    NightWind, Nov 13, 2023
    NightWind, Nov 13, 2023
    #18
    Feedman and Last Call Thank this.
  11. Nov 13, 2023 #19
    Last Call

    Last Call Road Train Member

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    Please do that you have my ph #
    I respectfully disagree with what your shop guys are saying about your tanks ;)
    I’ve seen a lot of 30 & 40 year old trucks not have the problem your experiencing
     
    Last Call, Nov 13, 2023
    Last Call, Nov 13, 2023
    #19
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  12. Nov 14, 2023 #20
    NightWind

    NightWind Road Train Member

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    Here's the "plan" after talking to the 3 top CAT and Peterbilt Mechanics in my area. I have also received the fuel schematics from Peterbilt/Paccar for my truck so that's helpful as well.
    1. Going to disconnect the return lines, let them empty in 5 gallon buckets. See what side does what. Make any corrections there.
    2. Going to smooth the top edges of the fuel tank necks/openings as there is some slightly irregular/uneven wear on both.
    3. Pray.
      Dunno that I have your number....
     
    NightWind, Nov 14, 2023
    NightWind, Nov 14, 2023
    #20
    Feedman and Last Call Thank this.
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