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63 F-head Sputtering And Dying

Discussion in 'Early CJ5 and CJ6 Tech' started by joshs1ofakindxj, May 29, 2016.

  1. Glenn

    Glenn Kinda grumpy old man Staff Member

  2. joshs1ofakindxj

    joshs1ofakindxj CJ5 Owner

    I FINALLY got a chance to rebuild the carb. This was my first, and I think I did alright. I took a few guesses but the jeep seems to be running well.

    The kit came with 3 rubber tipped fuel needles and 2 seats, one of which was the same size as mine but a little different and the other was nowhere close. None of the 3 needles matched mine so I went with the closest size. Who knows where the parts I have came from. I think a few years back friend rebuilt it with a parts kit from Kaiser Willys.

    The check ball I had was also between the smaller and larger supplied balls. I went with the larger one, and I'm missing the check ball weight shown on the diagram.

    The jeep is running strong. The only thing that isnt perfect is the idle. It makes a slight backfiring noise, random yet constant. Like a "pah, pah, pah-pah, pah, pah-pah" but I think ita always done that. Any ideas?
     
  3. scoutpilot

    scoutpilot Member

    I think, if you took a poll, you would find that at least two out of three 134’s sound like that. Mine do it. You would have to spend a heck of a lot of money to get rid of the Jeep put-putt.
     
  4. Glenn

    Glenn Kinda grumpy old man Staff Member

    X2 on what Scoutpilot said.
     
  5. joshs1ofakindxj

    joshs1ofakindxj CJ5 Owner

    Thanks guys. I took a long drive for ice cream yesterday and it seems to be running perfect. Hopefully it stays that way!
     
  6. Glenn

    Glenn Kinda grumpy old man Staff Member

    Drive it for a week or so and then check point gap, timing, cleanliness of points, rotor, inside of cap contacts, etc.
     
  7. Greevesman

    Greevesman Member

    My experience is, after you rebuild the carb, get a fuel filter and a fuel pressure regulator. Mine runs like a top now.
     
  8. joshs1ofakindxj

    joshs1ofakindxj CJ5 Owner

    Where do people typically install a filter? Also, I've never seen a generic pressure regulator that could be slapped on anything.

    For setting the mixture screw, I just fiddled with it at idle till it sounded nice. Is there any better rules of thumb or anything, since I don't have a gauge to measure the intake flow?
     
  9. Glenn

    Glenn Kinda grumpy old man Staff Member

    The best place for a fuel filter is before the pump, but I'm pretty sure most, including myself install one after it. They have regulators that you can put barbed fittings on at parts stores, Kaiser Willys has them also.

    For the idle mixture screw start with 1 1/2 turns out from softly seated. Once you get it idling good turn it in until you notice the idle just start to slow down. That is supposed to be the best adjustment but I just use it to get the minimum turn out and then feather it from there.
     
  10. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Easy to install a filter before the pump.

    Universal ajustable pressure regulator can be had for $20. Recommended for "rough service" with a F-head.
     
  11. 1960willyscj5

    1960willyscj5 Well-Known Member

    I put one in before the pump, and another one between the pump and the carb.
     
    scoutpilot likes this.
  12. scoutpilot

    scoutpilot Member

    I’m with him. I run two filters. Both are reusable after cleaning. Both have ceramic elements. #1 is a tube-type, in-line located just downstream from the tank, mounted in the frame. #2 is located at the carb. I clean them once a year.
     
  13. joshs1ofakindxj

    joshs1ofakindxj CJ5 Owner

    Is there a way for contaminants to get in the fuel in the mechanical pump that makes you run one before and after?
     
  14. joshs1ofakindxj

    joshs1ofakindxj CJ5 Owner

    Here is the jeep you guys have been helping me keep running:

    [​IMG]
     
  15. Glenn

    Glenn Kinda grumpy old man Staff Member

    Looks good! You all seem to be enjoying it so that makes all of the effort worth it. :coffee::)
     
  16. Glenn

    Glenn Kinda grumpy old man Staff Member

    Probably overkill but is a good idea. Better to have more than enough than the opposite. :)
     
  17. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    I like the jeep. Authentic to the real roots of Jeep history.