User Tag List

Results 1 to 5 of 5

Thread: sputtering and dying

  1. #1
    Newbie CMAV8R's Avatar
    Join Date
    Jul 2009
    Location
    Fort Polk
    Posts
    13

    Branch
    Army
    Status
    Serving
    Served
    1986 to Present

    Closest Installation

    Fort Polk
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default sputtering and dying

    Folks: Need your collective help! My 86 CJ will idle all day long, but when I drive it and get high rpm or under load (like going up an incline) it sputters and jumps, and dies. Seems to be worse in cooler weather, but haven't been able to drive it long enough to ascertain. Am thinking that it's not enough fuel, but could be wrong. Could be the computer (haven't done the bypass), Would hate to think it's as serious as cylinder issues.

    Here's some background: 258 with 103k miles; MC2100 (1.08), and TFI. Everything else is stock and relatively new, except the engine itself.

    It's killing me to figure it out.

    Appreciate your help!
    Van

  2. #2
    Zombie Slayer... JoeySnow70's Avatar
    Join Date
    Aug 2008
    Location
    Lawton
    Posts
    1,736

    Branch
    Army
    Status
    Retired
    Served
    1997 to Present

    Closest Installation

    Fort Sill
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)

    Default

    Timing???? Have you check the timing?

  3. #3
    Got Beer airforce26yrs's Avatar
    Join Date
    Jan 2009
    Location
    southeast michigan
    Posts
    4,182

    Branch
    Air Force
    Status
    Retired
    Served
    1965 to 1991

    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)

    Default

    I might be mistaken (won't be the first time), but don't you have a mechanical vacuum advance for the timing? If so you might check it out. Or possible the fuel filter on the carb. What type of spark set up do you have, points and condensor or electronic?
    I'm Mike, make sure you spell it right, because I do not want to get the wrong A$$hole in trouble.

    If you do not have time to do it right the first time, how do you have time do do it over?

    www.jeepforum.com michiganmaveric

  4. #4
    Junior Member genesbro's Avatar
    Join Date
    Aug 2010
    Location
    Clinton
    Posts
    329

    Branch
    Navy
    Status
    Served
    Served
    1974 to 1983

    Closest Installation

    Tinker AFB
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Under a load and up hill sure make it sound like a fuel pump going bad to me. Those are the times when the most fuel is needed. Next time as soon as you feel it start to lose power back off the throttle and see if it perks back up, if so I would sure think the pump is weak.
    I have not yet begun to fight. John Paul Jones

  5. #5
    I am a chapter of one sincitycj's Avatar
    Join Date
    Dec 2007
    Location
    Las Vegas, Nv.
    Posts
    10,672

    Branch
    Army
    Status
    Served
    Served
    1985 to 1989

    Closest Installation

    Nellis AFB
    Mentioned
    47 Post(s)
    Tagged
    1 Thread(s)

    Default

    I was thinking fuel pump as well, especially since you have the same symptoms as mine when my pump went out. Also check for vacuum leaks. I replace a bunch of my lines after finding one leak. Made a nice difference.
    Quote Originally Posted by usnavymitchells View Post
    went to google to see if I too was a dumb ass!!! Well actually I am.

    http://www.sincityrubs.com/

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Get the MJ Supporter Membership for a little less than $0.06 a day and get more space, 2 MJ Stickers and no banners ads. [Check it out]