1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Engine Miss

Discussion in 'Early CJ5 and CJ6 Tech' started by Bob, Jul 13, 2004.

  1. Bob

    Bob Member

    Within the last month or so, an engine miss has "appeared" with the 225. It's an intermittent miss that happens across the rpm range. Almost like the engine shuts off and then springs right back to life. It's can get pretty bad at time; seems a little more often in the mornings. The dwell meter says the points are in good condition and the dwell is right on along with the timing. The fuel filters look fine too. Any suggestions? Coil maybe?
     
    Bob, Jul 13, 2004
    #1
  2. Southtowns27

    Southtowns27 Custom Title

    Probably not the coil, those tend to get worse as they warm up. I'd start by giving it a good tune up. Change the plugs, wires, cap, rotor, points, and condenser (even though the meter says they're good). You might be surprised how much of a difference it can make.
     
    Southtowns27, Jul 14, 2004
    #2
  3. mnbubba

    mnbubba New Member

    If you still have it check the ballast resistor. I developed a slight miss which lead to a big miss (the Jeep wouldn't go) when the resistor went bad, a few other guys I know have had the same problem, I carry an extra one now.
     
    mnbubba, Jul 14, 2004
    #3
  4. Project71-5

    Project71-5 BACON

    I had a miss developing at highway speeds and replaced the fuel filter and it has been fine since.

    Have you checked the bronze filter at the carb inlet?
     
    Project71-5, Jul 14, 2004
    #4
  5. James P. Enderwies

    James P. Enderwies Sponsor

    Bob & Joe: Take that bronze filter OUT of the carb. and throw it as far as you can into an "approiate" receptical. Put a good inline filter in and "forgetta aboutit". :)
     
    James P. Enderwies, Jul 14, 2004
    #5
  6. 66cj5

    66cj5 Jeep with no name

    mine does that on the right side, till it warms up. then goes away. left doesn't miss at all......
     
    66cj5, Jul 14, 2004
    #6
  7. Bob

    Bob Member

    Yeah the bronze filter in the carb is clean. Heck, the points aren't that old, but I have an extra set to try. You know, I replaced the ballast resistor this past winter and haven't drove it too much with it. I hope I still have the old one to try. That might be it. Thanks for the suggestions guys. I'll let you know what I find.
     
    Bob, Jul 15, 2004
    #7
  8. w3srl

    w3srl All-around swell dude Staff Member

    For a short-term test, you can simply jumper across the ballast resistor to see if the miss goes away. I wouldn't run it too long that way though, it is kinda hard on the points. ;)
     
    w3srl, Jul 16, 2004
    #8
  9. baitwaister

    baitwaister New Member

    I had a miss that took forever to find. It was a wrongly gaped plug. too little-.25. regaped goodbye too problem
     
    baitwaister, Jul 16, 2004
    #9
  10. Bob

    Bob Member

    Looks like it's the ballast resistor. I bypassed it to check and the engine didn't miss a beat. I'll have to pick one up Monday. Thanks again guys for the help.
     
    Bob, Jul 17, 2004
    #10
  11. w3srl

    w3srl All-around swell dude Staff Member

    Get two, they're sheep! Wrap the spare up in an old shop rag and leave it in the glove box for a trail spare! ;)
     
    w3srl, Jul 18, 2004
    #11