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Backfire

Discussion in 'Early CJ5 and CJ6 Tech' started by timjuhl, Sep 29, 2011.

  1. timjuhl

    timjuhl New Member

    I just installed a Solex carb on my 1962 CJ5 - It's running better than before but there are still some issues. One problem I've been experiencing is I sometimes get a backfire when I shift - I let off on the gas, shift and "boom" as I bring the power back in. If I hold a little power in during the shift I can usually avoid the backfire. Any ideas?

    Tim
     
    timjuhl, Sep 29, 2011
    #1
  2. PeteL

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

    In the exhaust, or up through the carb?
     
    PeteL, Sep 29, 2011
    #2
  3. timjuhl

    timjuhl New Member

    Sorry - out the exhaust.
     
    timjuhl, Sep 29, 2011
    #3
  4. jasonjp62

    jasonjp62 Member

    sounds like your timing is off some!
     
    jasonjp62, Sep 30, 2011
    #4
  5. nickmil

    nickmil In mothballs.

    Or it's running rich.
     
    nickmil, Sep 30, 2011
    #5
  6. jc588

    jc588 Member

    Mine backfires also,but I know it's because of an exhaust leak. Might check that. HTH
     
    jc588, Sep 30, 2011
    #6
  7. cookieman

    cookieman Member

    I agree
     
    cookieman, Oct 1, 2011
    #7
  8. termin8ed

    termin8ed I didn't do it Staff Member

    If its still backfiring after checking the fuel and timing, may be worth it to check the clearances on the lifters.
    I adjusted them a few weeks before you got it from me and I've had issues in the past with having to adjust them a couple times to get them to stay tightened down.
    Just another idea.
     
    termin8ed, Oct 2, 2011
    #8
  9. timjuhl

    timjuhl New Member

    Thanks all.... I pulled a spark plug out today and it was pretty sooty - I don't know whether it's from the original or Solex carb so I'm going to put in new plugs and see what they look like after driving it a bit. I appreciate all the suggestions and hopefully can figure out what's going on.

    Tim
     
    timjuhl, Oct 3, 2011
    #9