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  • Carburetor Not Getting Fuel

    I am not sure if this is the right forum for this Lincoln question but here we go. I own a 1965 Lincoln that has 65,000 miles on it and its original 430 4brl engine. It starts right up if I spray carb. cleaner down the carburetor. Otherwise the carb. isn't getting fuel from the tank. I know this because I have glass in-line fuel filter positioned before the fuel pump to keep any potential crud from the gas tank from reaching the carburetor. Only a small amount of fuel is reaching the glass filter. Does this mean my fuel pump has gone out or could it be my fuel line is blocked by crud from the tank? Any thoughts? Thanks in advance!

  • #2
    Welcome!

    I would indeed be highly suspicious of the fuel pump. If I'm not mistaken, this will utilize a "rubber diaphragm" style fuel pump, driven off the engine. If the pump is over 20 years old, it's almost certainly bad. Luckily, it appears it's a relatively inexpensive part. I see it listed for $58 on rockauto.com.

    My only personal experience with mechanical pumps was on my old '72 Jeep. On that vehicle, this part was a snap to replace. (albeit quite rusty.)
    Mike Martin

    1997 Mark VIII LSC 5.0
    2001 Dodge Dakota

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    • #3
      If you disconnect the fuel line at the carburetor, run it to a container, and crank the engine, you can see if the fuel pump is working. If you disconnect the fuel line to the pump you should be able to see if the line is plugged up.

      Bill
      1994 Deep Jewel Green 183,142 miles
      1997 White LSC 135k miles
      1998 White Collectors Edition 175k
      1994 Black (#2) 100k miles
      1993 Deep Jewel Green Convertible

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      • #4
        Originally posted by tixer View Post
        Welcome!

        I would indeed be highly suspicious of the fuel pump. If I'm not mistaken, this will utilize a "rubber diaphragm" style fuel pump, driven off the engine. If the pump is over 20 years old, it's almost certainly bad. Luckily, it appears it's a relatively inexpensive part. I see it listed for $58 on rockauto.com.

        My only personal experience with mechanical pumps was on my old '72 Jeep. On that vehicle, this part was a snap to replace. (albeit quite rusty.)
        Thanks. Yes, it very well could be the fuel pump. However, the diaphragm isn't leaking which usually indicates the pump is going out.

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        • #5
          Originally posted by billcu View Post
          If you disconnect the fuel line at the carburetor, run it to a container, and crank the engine, you can see if the fuel pump is working. If you disconnect the fuel line to the pump you should be able to see if the line is plugged up.
          Thanks. I know no fuel is reaching the fuel pump because the in-line glass fuel filter I installed (ahead of the fuel pump) is getting very little fuel. Therefore, I know no fuel is reaching the carb. because the fuel pump isn't getting any fuel.

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          • #6
            Yes, but if you disconnect the line to the fuel pump and gas flows out of it, you'll know that line isn't blocked. You were wondering if it was the fuel pump or the line to it.

            Bill
            1994 Deep Jewel Green 183,142 miles
            1997 White LSC 135k miles
            1998 White Collectors Edition 175k
            1994 Black (#2) 100k miles
            1993 Deep Jewel Green Convertible

            Comment


            • #7
              I may be wrong, but aren't the fuel filters supposed to be after the fuel pump, but before the carb??
              Andrew
              96 MKVIII Base

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