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Odd Fire V6 With Dui Dist.

Discussion in 'Jeepster Commando and Commando Tech' started by eightbarrel, Jun 28, 2020.

  1. Jun 28, 2020
    eightbarrel

    eightbarrel New Member

    Curryville mo
    Joined:
    Jun 28, 2020
    Messages:
    3
    71 Commando 225 odd fire with DUI distributor. The odd side of the engine doesn't change a thing when you cancel any or all of the cylinders but the even side makes a big difference. Compression ranges from 138-150. Changed plugs and wires side to side with no difference. Can't find any vacuum leak either. It does have the correct distributor. I looked at the pickup and reluctor.
     
  2. Jun 28, 2020
    jpflat2a

    jpflat2a what's that noise?

    Riverside CA
    Joined:
    Jul 30, 2003
    Messages:
    8,020
    If wires are installed correctly, points to distributor problem if one bank is dead.
    Correct rotor with the extended tang ?
     
  3. Jun 28, 2020
    eightbarrel

    eightbarrel New Member

    Curryville mo
    Joined:
    Jun 28, 2020
    Messages:
    3
    It's the rotor that came with the distributor. Customer said it run fine before he pulled engine to get broken bolt out of timing cover to engine. He didn't keep the installation instructions for the distributor
     
  4. Jun 28, 2020
    iharding

    iharding Member

    Tacoma, WA
    Joined:
    Feb 24, 2013
    Messages:
    284
    Which post is #1? I was sent this when I asked.
     

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  5. Jun 28, 2020
    eightbarrel

    eightbarrel New Member

    Curryville mo
    Joined:
    Jun 28, 2020
    Messages:
    3
    I have read it has to have number 1 on a narrow terminal and some say wide terminal. Both post say it would run right if on the wrong one. I'm going to call DUI tommorow and have them fax me instruction sheet
     
  6. Jun 30, 2020 at 7:53 AM
    timgr

    timgr Jeepin' Nerd 2020 Sponsor 2019 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    21,064
    To make the odd-fire angles the distributor has two pickups for triggering the spark. If one of these pickups were dead (open or shorted), the distributor might fire on only half the cylinders. I belive that's what Jim (jpflat2A) is referring to. Phasing has to be right too, but I understand that won't stop the cylinders from firing (badly).
     

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