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problems getting my 68 cj5 over 55mph

Discussion in 'Early CJ5 and CJ6 Tech' started by rmandree, Oct 19, 2008.

  1. Oct 19, 2008
    rmandree

    rmandree Jeep Newbie

    Baton Rouge, LA
    Joined:
    Feb 20, 2008
    Messages:
    18
    We've been working on this issue for a few months now. We set the timing and had the dwell points set--which got the Jeep running incredibly. However, the next day I ran into the same problem that I have been dealing with. When I get up to 55mph, the jeep starts back firing and sputtering. It is almost as if no gas is getting through. We just put a new distributor cap and cleaned the spark plugs. It will run great for a day, then it goes back to the same old issue. Does anyone have any suggestions?
     
    rmandree, Oct 19, 2008
    #1
  2. Oct 19, 2008
    russo

    russo Hope is not a method

    Norris, Tennessee
    Joined:
    Oct 28, 2005
    Messages:
    498
    Never had the 55 mph issue. I'm afraid to drive that fast :) Mine did sputter and quit on me frequently. After a carb rebuild/cleaning and replacing the 40 year old fuel pump - no problems.
     
    russo, Oct 19, 2008
    #2
  3. Oct 19, 2008
    66cj5

    66cj5 Jeep with no name

    NorthWest Indiana
    Joined:
    Sep 10, 2003
    Messages:
    2,084
    mine used do that but, increased the fuel pressure (I have an adjustable regulator on mine) from 2.5 (factory) to 3psi and it went away.
     
    66cj5, Oct 19, 2008
    #3
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