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V6 sluggish

Discussion in 'Early CJ5 and CJ6 Tech' started by sparky, Oct 31, 2005.

  1. Oct 31, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    I can check I've got headers/dual side exit.

    How's it 180* out? I had it pointed exactly the same direction as when I pulled the distributor and I had everything lined up at TDC before and after the timing chain swap. The distributor went back in w/ the rotor pointed the same direction as it was coming out. Crankshaft/cam moved a bit but I always put 'em back in synch to be sure. Timing mark lined up with the vibration damper at 0* when I put on the timing cover.

    Guess I don't know what 180* means in this case, I sure thought I did but everyone keeps saying that's what they think it is.
     
  2. Oct 31, 2005
    gte636p

    gte636p Member

    smyrna, Ga
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    well shux...
     
  3. Oct 31, 2005
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
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    Being out 1 tooth on the timing chain will not make it loose that kind of power, because an old hotrod trick was to advance the cam to pump up the lower end. My guess is the clocking of the distributor or the overall timing.
     
  4. Oct 31, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Yeah, I left the cam straight up stock. I didn't change the timing of it. Thought about it briefly but decided the Jeep had plenty of power as it was w/o that.
     
  5. Oct 31, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    If it helps any it runs extremely well/smoothly at all RPM it's just lacking power and the exhaust smells extremely rich, which it didn't before.
     
  6. Nov 1, 2005
    junkfood

    junkfood Member

    Casa Grande,Az.
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    Easiest way to check clocking(sequence) of the wires is, First post to the right of the power plug is odd(1,3,5). Every other one from there is also. Number 1 can be any odd post as long as it lines up with the rotor. Was your chain real bad before you changed it? Did you re-adjust the carb mixture after? If your chain had alot of slack your carb may be to rich now.
    Keith
     
  7. Nov 1, 2005
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    You sure that an odd fire will run right if you rotate the order of the wires? I'm not an expert on the odd fire, but I recall it has something like a different angle between firing, like 45-75-45-75 etc. Maybe you have to jump a pair of locations on the cap, not a single location, to get the relative timing between the cylinders right?
     
  8. Nov 1, 2005
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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    Tim's comment above about the Dauntless' unique firing pattern got me to thinking...

    I'm no expert on the odd-fire, but it seems logical that if the distributor was 180* out, that would put the timing 30* out per cylinder, which would still be within the range that could be "corrected" by turning the distributor. That would get you to the point where the engine would still run pretty smoothly, but be really anemic.

    Noodling this a bit further, I'm thinking it might even be possible for the timing to be "correct" according to the marks, but remember the distributor rotates once per every two crank revolutions. That means the ignition timing could be dead nuts on, but firing each cylinder on the wrong stroke. With the timing of the OF engine you may actually be running on only three cylinders, even though all 6 are trying to fire. That would explain the very rich smell out of the tailpipe.
     
  9. Nov 1, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    I advanced it to 10* just now.

    We'll see. I still don't see how I'd have it 180* out though. It was on the compression stroke when we tore it down. I'll check the passenger side exhaust pipe to be sure though.

    Keith, the timing chain was slapping pretty bad...
     
  10. Nov 1, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Drove it to work since Lex stayed home sick so she'd have something to drive if she needed to come to town to get medicine.

    Everything was good and warmed up so I checked the exhaust. And the correct answer is 180* out.

    Now how the heck did it happen and how do I fix it? I'm thoroughly stumped.

    I didn't doubt you guys but I sure didn't and still don't see how it is.
     
  11. Nov 1, 2005
    Mudweiserjeep

    Mudweiserjeep JEEP: Bouncy and Fun

    tipp city, ohio
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    I think that you can just move the wires.

    Not sure though.
     
  12. Nov 1, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Which way?
     
  13. Nov 1, 2005
    Mudweiserjeep

    Mudweiserjeep JEEP: Bouncy and Fun

    tipp city, ohio
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    Assuming the firing order is right....just move them 180*(1 side of the cap to the otherside)
     
  14. Nov 1, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    That's what I thought. Just checking to be sure after I did this much. :rofl:
     
  15. Nov 1, 2005
    junkfood

    junkfood Member

    Casa Grande,Az.
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    Hope that's it... Keep us posted.
    Keith
     
  16. Nov 1, 2005
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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    I think I'd just pull the distributor, rotate the rotor 180* and plop it back in, but hey that's just me. :D
     
  17. Nov 1, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Well MOP and I got it fixed. I'm still not sure how or what we did. We moved the distributor head around changed the timing, moved plug wires 180* moved 'em forward one and back two. In the end when was ready to give up and I put it all back together in what I thought was gonna be 180* out it worked. :shock:

    Definitely firing on all 6 now. :twisted:
     
  18. Nov 1, 2005
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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    Whoo Hoooo!

    Way to go guys! :stout: :stout: :stout:
     
  19. Nov 1, 2005
    Boyink

    Boyink Super Moderator Staff Member

    Tulsa, OK
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    So who held the distributor and who spun the Jeep? ;)

    Glad to hear it's running better...
     
  20. Nov 1, 2005
    MOP

    MOP Active Member

    Pullman, WA
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    Boy....I realize you know Sparky, but I didn't think you could know me so well.
     
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