Well It Is Trying To Run

Discussion in 'Flat Fender Tech' started by DanStew, Apr 11, 2017.

  1. Apr 11, 2017
    DanStew

    DanStew Incorrigible. Staff Member Sponsor

    Lexington, South...
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    I installed a fuel pressure regulator before the Solex carb last weekend. I tried to start it and i killed the old battery.
    Tonight i pulled the new battery out of my Wrangler to try and get the jeep running.
    Well It wanted to. I got a can of starting fluid and it will "fire" but it just wont run. I tried the rotate the wires on the cap method just in case i was off. I did get a backfire out of the carb a few times and that at least let me know i was probably 180 out. So i put the wires back to where i started and then twisted the distributer around to see where i can find the spot where it will run. I previously did the "static timing" but it just didnt want to run. So i can get it to fire but not run so i am getting spark.
    I honestly think i just have two really bad carbs. I just cant get it to run and the starting fluid only gets it to fire for a second but nothing else. :(
     
  2. Apr 11, 2017
    Unkel Dale

    Unkel Dale Can A grinder cut it off?

    Pittsburgh, Pa.
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    Take the fuel line from the pump to a very clean container as make sure it is send gas to the carb, please. Crank the engine check the amount of fuel in the container
     
  3. Apr 11, 2017
    BobH

    BobH Sponsor Sponsor

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    You aren't getting fuel. Can you see fuel squirt when you look down the carb and work the throttle?
     
  4. Apr 11, 2017
    DanStew

    DanStew Incorrigible. Staff Member Sponsor

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    i am getting plenty of fuel. it is still flooding the bottom of the intake.
     
  5. Apr 11, 2017
    jpflat2a

    jpflat2a what's that noise?

    Riverside CA
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    So why is not running on fuel then ?
    If you say it's getting plenty, then using the starting fluid doesn't make any sense.
     
  6. Apr 11, 2017
    Daryl

    Daryl Sponsor Sponsor

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    Did you have the distributor out since it ran? If so, I would start over by pulling it to TDC and making sure it is right.
     
  7. Apr 11, 2017
    PeteL

    PeteL Member Sponsor

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    Yeah. That "twist it and try it" method never worked for me.

    Get out the FSM.
    Check the wire sequence and clocking in the cap.
    Set the points, set the timing.

    Start with one "known good" step, then the next.
     
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  8. Apr 11, 2017
    DanStew

    DanStew Incorrigible. Staff Member Sponsor

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    This whole engine does not make sense to me. That is why it is killing me.
    I have started at TDC so many times it just isnt funny.

    I do know that it is smoking like insane out of the vent from oil fill tube into the metal cross over pipe. i do not have the air tube connected to the carb top and smoke is coming out. That is bugging me. i already checked all the valves and do not know where the smoke is coming from
     
  9. Apr 11, 2017
    PeteL

    PeteL Member Sponsor

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    Is the valve/cam timing definitely correct?

    Done a compression test?
     
  10. Apr 11, 2017
    DanStew

    DanStew Incorrigible. Staff Member Sponsor

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    Yes it is.

    compression is between 75-85. not great but should fire
     
  11. Apr 11, 2017
    PeteL

    PeteL Member Sponsor

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    Have you verified TDC at the #1 cylinder - could the pulley mark be 'off?'

    Cleaned and set the points? Then wiped them with a business card or clean paper between them?
     
  12. Apr 11, 2017
    DanStew

    DanStew Incorrigible. Staff Member Sponsor

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    Verified TDC

    No marks on pully.
    The Flywheel has been swapped 180 by previous owner

    Nice new points, Set correctly. I am getting spark.
     
  13. Apr 11, 2017
    PeteL

    PeteL Member Sponsor

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    Maybe it's the carb? :D

    Sorry…


    In this situation, the best thing I know to do is to start it by towing, or better, rolling down a long hill. Works miracles.
     
  14. Apr 11, 2017
    tarry99

    tarry99 Member Sponsor

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    Are you sure you're at TDC on #1 on the compression stroke and not on the exhaust stroke?
     
    Last edited: Apr 12, 2017
  15. Apr 11, 2017
    haighfam

    haighfam Member

    Paradise, CA
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    Had the same with my 3a, PO rebuilt the engine and turned the flyway around. Hard to time until I went back to basics. #1 at TDC on compression measured with a ruler to be sure exactly on top. Made sure distributor clocked right, plug wires in correct order and rotated distributor until points just starting to open. Fired right up and timed by ear.
     
  16. Apr 11, 2017
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

    Apopka, Fl
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    Does it have timing gears and not a chain? Timing gears distributor turns counter clockwise.
     
  17. Apr 12, 2017
    scoutpilot

    scoutpilot Sponsor Sponsor

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    Condenser??
     
  18. Apr 12, 2017
    DanStew

    DanStew Incorrigible. Staff Member Sponsor

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    I will go back in it tonight and start again.

    Now I have seen the distributer rotate a million times but i cant remember off the top of my head if it was CW or CCW
    I even flipped the wires opposite directions yesterday to try that.

    I have done the finger over the hole method for finding TDC. Stupid question, will i get pressure on Exhaust stroke? I have also put the compression gauge on it and looked at the pressure as it rises to the TDC.

    Condensor is new. It is getting spark just fine.

    Only other thought i had was I did adjust the valves when i had it apart. Is there a way that i could totally screw up the valves and make it not start? I believe i got the adjustment right, but there is always a way to fail.

    I pulled distributer and found it was not right and had to pull oil pump to fix. The clocking is correct.

    Another thing i noticed last night and need to bring up. I got a new cap for the autolite distributer a while ago, and when twisting it last night i noticed that likes to come off the distributer. The clips do not like to hold onto it good. It is on the distributer but just does not feel right. I know there are two different size caps. Are the size difference night and day, or could the larger cap fit on the smaller distributer?
     
  19. Apr 12, 2017
    PeteL

    PeteL Member Sponsor

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    "Objection, your Honor... the witness has been witholding information!"

    The cap should fit very snug, and with a cog that allows it to fit precisely in only one position.

    Anything less, and I'd say try swapping it. AND make sure you have a matching rotor, also keyed properly.
     
  20. Apr 12, 2017
    DanStew

    DanStew Incorrigible. Staff Member Sponsor

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    It fits the lug, it doesnt "spin" it just seems to easily get knocked off. either because the metal clips dont hold it enough or a little larger. I did try to put an Fhead cap on and it fit the same.
     

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