Fuel not getting to carb

LanceB
LanceB Senior Contributor
edited November -1 in HUDSON
Thanks all, thanks for your help on the grounding issue with my starter. I cleaned contact surfaces and added star washers where I could and got it to start turning over.



My new issue now is not getting the fuel from the tank to the carb. I have a mechanical fuel pump and I hope it is hooked up correctly. I have been turning the engine and I am not getting the fuel to flow. I have a see through inline filter and do not see any fuel in that yet. What could be my problems now? Do I need to prime the line? More fuel in the tank? (only have about 3 to 4 gal in there now)



Look forward to your expert help once again all.



Best regards and Happy Fathers Day.

Comments

  • Jon B
    Jon B Administrator
    There could be one of several problems. You need to start isolating things. First, disconnect the fuel line from the tank, just before it enters the fuel pump. Then run a rubber hose from the fuel inlet on the pump, to a gas can. If it doesn't pull fuel from that, the problem lies in your pump (or carb, perhaps?). If it does pull fuel, the problem is in the tank or the line to the tank. Check it out, and get back to us.
  • LanceB
    LanceB Senior Contributor
    Ok, got it to flow, will let you know it it fires up. Thanks all
  • Unknown
    Unknown
    Another option:



    disconnect the fuel pump from the fuel lines and remove it from the engine;



    connect a short fuel line to it on the input side and stick the line end into some reservoir with fuel; hand-manipulate the puel pump arm and see if fuel comes out the exit side (carb side). If so, apparently the fuel pump is OK.



    If pump OK, attach pump to gas tank line and again hand-manipulate the pump to see if fuel will discharge from the carb side;



    1) if gas discharges, reinstall pump and fuel lines. PROBLEM is in the carb.



    2) if no fuel discharges, there is blockage in the pump-to-tank fuel line (remove the gas tank cap, and try blowing air thru the line from pump to the tank-have someone listen for air bubbles; IDEA if there is an in-line fuel filter, change it)



    This route saves the battery, starter, engine bearings (maybe), etc. i.e., why be turning the engine over unnecessarily with perhaps LOW oil pressure?
  • Unknown
    Unknown
    I pulled the tank on my '48 a few years ago to clean and patch it. I noticed the car doesn't seem to use the last 4 or so gallons of gas. My pickup is probably too high.



    Glad you solved the problem. I would have recommended;

    1. Check / replace the tankside filter. That can jam shut with rust if the tank is dirty.

    2. Throw in another 5 gallons of gas.



    Best of luck;

    -Chris

    '48 Super Six



    http://moltar.chrishull.com/pics/Hudson24Sept2006/frontwithvisor2.jpg
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