throttle stuck

Discussion in '1947-1954' started by chucks48, Nov 28, 2009.

  1. chucks48

    chucks48 Member

    Joined:
    Oct 23, 2009
    Messages:
    14
    Location:
    mid missouri
    My gas pedal is stuck , there is a rod and springs on the throttle, looks like it hinges on the lower portion of the block. I have soaked it with pb blaster. what do i need to do to free it up.
     
  2. willardgreen

    willardgreen Member

    Joined:
    Dec 17, 2007
    Messages:
    290
    Location:
    Dixieland!
    Carb

    :confused:Is it stuck when attached to the carb? Is it a new project or has this just started. 60 years will wear out linkage if used and 60 years may corrode parts unused. Take it loose from the carb to rule it out then move on to the next piece. Have a friend work the linkage while you watch from the top then below. Someone here will have the part you need. as some are hanging the foot feeds in the new style.
     
  3. Kens 50 PU

    Kens 50 PU Member

    Joined:
    Jun 8, 2006
    Messages:
    3,403
    Location:
    tomball, tx
    There are a lot of working (and sometime) not working parts transferring power to the engine from the foot accelarator to the carb. Simplified, horizontal movement of the accelarator pedal via the linkage is converted to vertical movement to the carb via a bell crank. That gives you the ability to open the throttle within the carb to increase gas/air flow when the gas pedal is pushed down. When lifted, or you take your foot off of the gas, a return spring returns the system to the minimum postition. Every point that actually moves when this happens can became a sticking situation, if gummed up, or corroded, or bent in some less than desirable direction. Then, if your truck is stock, you'll have a throttle cable which manually opens the throttle, and it too, can become stuck in a less than desirable position. Within the carb itself, the screws holding the butterfly valve to the throttle shaft may have loosened causing the butterfly to stick, or the shaft itself could be gummed up.

    Use a good solvent at all of those points and see if it will cause everything to work in unison.
     
  4. coilover

    coilover Member

    Joined:
    Mar 30, 2005
    Messages:
    2,564
    Location:
    Plano US
    When you find the problem let me know. My 37 Buick has a similar problem and it starts by pressing on the gas pedal. It isn't in the start plunger which is mounted on the carb because I can disconnect the linkage and work the carb throttle lever with absolutely no drag. I have to kick the gas pedal to the point it's going to bend the 1/4" rods before long. Once free everything works fine till it sits up for a couple weeks. Everything is lubed, the pins and holes are neither sloppy or tight, and the angles are all near 90 degrees so there should be maximum rotational force at each pivot. If it jacks with me much longer it will get replaced by a cable. Maybe I should drive it down to Tomball and let some fresh eyes check it out.
     

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