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Dieseling after shutoff

Discussion in 'Intermediate CJ-5/6/7/8' started by blue75, Nov 28, 2005.

  1. Nov 28, 2005
    blue75

    blue75 New Member

    Tupelo, MS
    Joined:
    Nov 2, 2005
    Messages:
    47
    The 258 in my 75 is dieseling after I shut it off. It doesn't do it all of the time, only about every third time I turn the ignition off. Any suggestions on what it might be?:?
     
    blue75, Nov 28, 2005
    #1
  2. Nov 28, 2005
    rmtaunton

    rmtaunton New Member

    Atlanta, GA
    Joined:
    May 10, 2005
    Messages:
    23
    do you have an electric fan?
     
    rmtaunton, Nov 28, 2005
    #2
  3. Nov 28, 2005
    2verpsters

    2verpsters New Member

    Baldwinsville,...
    Joined:
    Jul 25, 2005
    Messages:
    10
    New to the Jeep scene, don't even have one together yet. But I'm familiar with Chevy 350's and such. In my experience, dieseling has always been caused by timing issues. I would check your timing and see if your off by a few degrees. Might be a simple fix. Pete
     
    2verpsters, Nov 28, 2005
    #3
  4. Nov 28, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    I was thinking the same. Timing advanced a touch?
     
    sparky, Nov 28, 2005
    #4
  5. Nov 28, 2005
    blue75

    blue75 New Member

    Tupelo, MS
    Joined:
    Nov 2, 2005
    Messages:
    47
    Thanks guys!! I will make adjustments and see what happens.
     
    blue75, Nov 28, 2005
    #5
  6. Nov 28, 2005
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,525
    other possible areas
    bad gas (old, low octane)
    vacuum leak somewhere
    intake/ex manifold bolts loose....int take gasket leaking
    too high idle speed
    anti diesel solenoid/choke pull off inoperative
    carbon build-up in combustion chamber (not as common a problem as it used to be with unleaded fuel now)
     
    jpflat2a, Nov 28, 2005
    #6
  7. Nov 28, 2005
    speedbuggy

    speedbuggy Looking for a Jeep now

    Living the Good...
    Joined:
    Jul 1, 2004
    Messages:
    1,270
    Timing is my guess as well. At least it's a place to start.
     
    speedbuggy, Nov 28, 2005
    #7
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