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225 Even Cylinders not firing.

Discussion in 'Early CJ5 and CJ6 Tech' started by cole57chevy, Jun 30, 2004.

  1. Jun 30, 2004
    cole57chevy

    cole57chevy New Member

    Issaquah, WA
    Joined:
    Jun 30, 2004
    Messages:
    9
    I have a 71' CJ-5 with a 225 Dauntless that is causing me all kinds of headaches! I can seem to get the even bay (2,4,6) cylinder to fire or fire hot enough to make a difference. The Odd bay is firing and the header temp is above 500 degrees while the even bay header temps are around 150's. Can anyone help???

    I have replaced the whole ignition system from the distributor to the plugs. The coil is reading >2ohms on the primary and 8,500 ohms on the secondary. Timing is set at 5 BTDC and the Dwell is at 30. Spark plug gaps are at .035" etc.... #1 TDC is seems to be correct with the timing mark. All items within specs. I have even rotated the distributor 60 degrees to see if the wierd shaped lobes work better. To no avail. The jeep is sluggish on exceleration and sounds/feels like it is missing. The even bank compression is around 140 psi +/- 2psi, and the odd bank is around 133 psi. +/-2psi.
     
  2. Jun 30, 2004
    vanguard

    vanguard

    Sounds like either you might have an evenfire distributor or the distributor might be 180* out.
     
  3. Jun 30, 2004
    Hippo393

    Hippo393 Jeepless

    Charlotte, NC
    Joined:
    Sep 22, 2002
    Messages:
    1,130
    'zactly what I was thinking. ;)

    Turn the engine over (via socket/breaker bar or whatever) so that the timing mark is at TDC. Pull the dist. cap and notice the position of the rotor. It should be pointing at the wire leading to plug #1, or in the 7 or 8 o'clock position. If it's pointing at the 1 or 2 o'clock position, then that's prolly the culprit.

    BTW, welcome from Ohio. :beer:
    -Alan
     
  4. Jun 30, 2004
    cole57chevy

    cole57chevy New Member

    Issaquah, WA
    Joined:
    Jun 30, 2004
    Messages:
    9
    Thanks for your input. When 7-8 o'clock is mentioned, is 12 o'clock on the long axis of the engine or across the engine? Also, does anyone know for the odd bank of cylinders (or even), do they fire (points) on the sharp angle lobe or the long arched lobe of the distributor cam? On my cam the lobes (3 sharp 3 long arched) are, or look to be somewhat symmetrical on the cam. Is that correct? I've been back to TC's Offroad and checked and re-checked many times with the distributor number. I even had them bring out other similar distributors and they look the same, but the cap does not fit. Finally, the Vaccum advance is pointed almost straight at the radiator. Is that correct? Thanks again for all your help!!
     
  5. Jun 30, 2004
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    I just helped with an HEI swap, maybe I can help.

    #1 is pointed at the 7-8 O'Clock position as you stand facing the grill.

    Check that first!
     
  6. Jun 30, 2004
    CJMac

    CJMac New Member

    Northern California
    Joined:
    Jul 7, 2003
    Messages:
    14
    You may want to check the dist. rotor to make sure it is for an odd fire, the brass contact on the end that makes contact with the different poles on the dist cap is shaped different than on an even fire.
     
  7. Jul 1, 2004
    Hippo393

    Hippo393 Jeepless

    Charlotte, NC
    Joined:
    Sep 22, 2002
    Messages:
    1,130
    The 7-8 o'clock I was referring to is the transverse axis of the engine bay, not the longitudinal plane. So it's as if you were leaning on the drivers' side fender into the bay.

    No the vacuum advance should not be pointed at the radiator. I know what you mean though, because it's easy to do. For fun, loosen the dist. lock bolt and pull it back up and rotate it clockwise and re-seat. It should be pointed somewhere between the radiator and perpendicular to the passenger side fender. It's an easy adjustment......just fiddle with it. Be sure to plug the vacuum line prior to moving the dist. though. Got a timing light?

    Have you pulled the cap to see the orientation of the rotor at TDC?

    HTH. :beer:
    -Alan
     
  8. Jul 1, 2004
    Jeepnut67

    Jeepnut67 New Member

    Mammoth, AZ
    Joined:
    Aug 25, 2003
    Messages:
    49
    Few things in english here for you... in 1967 Buick changed distributers for the odd-fires, if you have the wrong one it could do this... if you have a pre-1967 cam and a newer distributer it could do it.

    Also make sure the rotor has a flag hanging off the tip that rotates around, it should have that or the one bank will get no spark.

    My fathers CJ had a pre-67 cam in an engine he bought as a whole from a guy, and when we went to put his 70 distributor in it the darn thing did exactly what yours is doing, we tried moving the wires one notch to no avail too.. something about the spacing on the lobes was all off between the distributers, cant make them work.
     
  9. Jul 1, 2004
    Hippo393

    Hippo393 Jeepless

    Charlotte, NC
    Joined:
    Sep 22, 2002
    Messages:
    1,130
    Ha ha I know watcha mean. You had that happen too?? R)
     
  10. Jul 6, 2004
    cole57chevy

    cole57chevy New Member

    Issaquah, WA
    Joined:
    Jun 30, 2004
    Messages:
    9
    Jeepnutz67

    Jeepnutz67

    YOU ARE DA MAN!!! It was the wrong distributor!!! I cant believe that. Thanks for all your help.

    Ya would think that Buick/Jeep whoever, would let that be a better known fact!!!
     
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