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  1. #1
    FEP Power Member dagenham's Avatar
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    Default 04 Mach 1 refueling issue

    Bought an 04 Mach 1 last summer with 170K miles on it and when trying to refuel it wont let me squeeze the gas pump handle all the way. If I do it just shuts the nozzle off like it's full.
    I've heard a few different things could be the problem but I'm thinking about starting with the vapor canister behind the left rear tire since that seems like the easiest thing to get to. My question is how will I know if it is actually bad or not? It seems the refueling issue is fairly common on these cars but I get a lot of different possibilities for the solution.
    Current Mustangs
    1966 6 cylinder coupe
    1984 SVO 9W
    1985 Saleen #132

  2. #2
    FEP Member 86MustangGtRob's Avatar
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    Maybe check the vent line. I know that could cause the pump to keep stopping. With my Lincoln ls, it was a vent valve that caused that issue.

  3. #3
    FEP Power Member mcb82gt's Avatar
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    Quote Originally Posted by 86MustangGtRob View Post
    Maybe check the vent line. I know that could cause the pump to keep stopping. With my Lincoln ls, it was a vent valve that caused that issue.
    That was my first thought as well.
    Mike

    Now stang-less.

    88 Cougar 5.0

  4. #4
    FEP Power Member dagenham's Avatar
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    I've checked the hoses from the filler door and to the vapor canister and didnt see anything that looked kinked or blocked.
    Someone suggested I unhook the vapor line from the tank to the canister and see if the problem still exists
    Current Mustangs
    1966 6 cylinder coupe
    1984 SVO 9W
    1985 Saleen #132

  5. #5
    FEP Power Member
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    There is a check valve at the end of the filler tube. This prevents siphoning of gas but something could sit on it. I found mine laying in the tank.
    Fox Body/3rd Gen MCA Gold Card Judge
    84 SVO 24K miles, 85 Mclaren Capri Vert. 84 GT Turbo Vert.
    88 Mclaren Mustang Vert 20K miles, 89 Mustang LX Sport Vert,
    03 Mach 1 7900 miles, 74 Mustang II, 69 Mustang, 67 Mustang, 14 Mustang CS/GT,
    15 F150 FTX Tuscany, 16 F250 Crewcab, 67 Tbird 47K miles

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