Carter Carb 2 Barrel Issues

Discussion in 'Engine/Fuel/Exhaust' started by Mopar_Gods, Apr 21, 2017.

  1. Mopar_Gods

    Mopar_Gods New Member

    Vehicle wont stay running with choke closed when it is cold. Fuel filter and both jets in carb both getting a nice stream of fuel in the carb. I have a manual cable for the choke inside the vehicle. It would appear that the curb or idle screw are not working as they are suppose too. Doesn't seem to matter which step I set the idle screw on the vehicle wont stay running.

    If I put the choke half way the vehicle and carb will both start but shuts off within a few minutes before I can try to induce the rpm. Any help with this would be much appreciated before it drives me completely insane. I have also noticed that the choke vacuum is working when starting the vehicle. Thank You
     
  2. Bob Hogan

    Bob Hogan Well-Known Member

    Disable the "Choke Pull". If your using the Manual Choke Cable set up, Then your defeating the purpose of the manual operation of the cable with the pull off.
    See if that helps you problem to start with... :)
     
  3. Mopar_Gods

    Mopar_Gods New Member

    I did disable it. Also checked the plugs and they look good. And oil doesn't smell like fuel either. It is almost like the float is not working properly. Yeah even with the choke open at 1/4'' the engine will start but wont stay idling. Doesn't matter where the idle screw is set on the cam stepper still wont idle. Can get it to run maybe 2 minutes and then it will shut down. I checked for vacuum leaks I see none. When it does run for those few minutes pretty obvious it is running rich half to open the garage doors or get high as a kite in there. This vehicle has always started fairly easy even with a manual choke so not sure what the issue is. I have no gauges so cant really test air and fuel mixture anything. Am thinking of pulling the carb off but question if I should just because of it refusing to idle. Also I have not changed the timing because as stated has always ran pretty good. Doesn't seem like anything major but then again hell if it wont idle it wont run either. Thank You
     
  4. Bob Hogan

    Bob Hogan Well-Known Member

    ok.. Good info... Now we can look at a few other items.....
    Check the fuel filer for a restriction... Unless you have changed it?
    Also might need to check fuel pump pressure to make sure the fuel pump is in good working order?
    Make sure all the fuel hoses are good... Even the ones back at the fuel tank. If they are old and cracked? they might be sucking air? And not delivering enough fuel.
    Also Check again for vacuum leaks with a can of carb spray.
    Turn the idle air mixture screws all the way in and then turn them out 3 turns each. See if that helps....
    Lastly, you might be correct on possibly needing a carb overhaul?

    Keep us posted.... :)
     
  5. Mopar_Gods

    Mopar_Gods New Member

    The fuel sending unit is new. All fuel lines or new. The fuel filter is new. I have over 5 psi from fuel pump. The fuel pump is also new. I checked for vacuum leaks around the base of the carb and intake no leaks that I can find. Have not changed the idle air mixture screws because the timing seems to be okay. Thank You
     
  6. Mopar_Gods

    Mopar_Gods New Member

    Boy oh boy what a mess I have on my hands. The pocket where the the built-in pocket for the choke spring coil goes is missing not only that who ever had it before me broke the bolts off in the manifold pocket and of course the choke spring is missing I guess that is why they had a manual cable rigged up for the choke.that finally failed. Guess I will half to figure something out. Thank You
     
  7. Bob Hogan

    Bob Hogan Well-Known Member

    So I'm Guessing you have a broken choke?
    Get it the car.... Mash the pedal about 6 times.... Crank the engine about 1 turn... Mass the Pedal about 6 more times.... And try to start the car... As soon as it starts feather the throttle to keep it dunning for about 3 min. and then see if it idles.. This will allow the accelerator pump to do the enrichment that the engine needs to over come it's cold start.
     
  8. mrmopartech

    mrmopartech Moderator Staff Member

    This might be a good time to install a new intake and carb with electric choke.Now what engine and intake is on there now? So please post some more info and we can help furthure,mrmopartech
     
  9. Mopar_Gods

    Mopar_Gods New Member

    I am thinking about changing the manual carb to a new electronic automatic 2 barrel carb. I think summit has them. What exactly would half to be changed? The linkage and what else? Just wish I knew away to rig the carb now I tried to figure something out last night but couldn't figure anything out. Tried to figure something out with a choke cable but it kept interfering with the advance choke vacuum so that didn't work to good. Since the advance is working it is opening the choke to fast which is causing the carb to die pretty quick because the coil thermostat is missing which allows the choke plate to open slowly after the car heat temp rises. I did back the air and fuel mix screws out three complete turns like Mr Hogan suggested and it does seem to run less rich now at the tail pipes with what little time I can get it to idle. I wish I new how to post pictures I could show you all what I have and what I am trying to figure out.Thank You

    1977 Dodge Aspen 2 Door Coupe Slant Six 225 3.7 Original Super Six 2 Barrel Carter Carb
     
    Last edited: Apr 22, 2017
  10. Mopar_Gods

    Mopar_Gods New Member

    I went ahead and removed the old carb and rebuilt it. Backed the air and fuel mixture out 2 1/2 turns we are back in business now. Fixed it. I took this project on around 2 years ago and this is the only issue I have really had with it so I cant complain to much. Thank you all for the advice and or tips. Remember Mopar Or No Car.
     
    Bob Hogan likes this.

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