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(lack Of) Altitude Sickness.

Discussion in 'Early CJ5 and CJ6 Tech' started by BobH, Jun 16, 2019.

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  1. Jun 16, 2019
    BobH

    BobH Sponsor Sponsor

    Oviedo, Fl
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    I just brought my 60 CJ 5 from Colorado at 9300 ft to Florida at 51 ft.
    It took 3 hrs to get it started and off the trailer. It hasn’t started since. I changed the plugs and they were BLACK!! Other than change the plug, what should I do, jets, timing??
     
  2. Jun 16, 2019
    scoutpilot

    scoutpilot Member Sponsor 2019 Sponsor

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    Full blown tuneup is called for. I would do it as a matter of course.
     
  3. Jun 16, 2019
    BobH

    BobH Sponsor Sponsor

    Oviedo, Fl
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    So far, I’ve done everything but points and condenser. That’s neat.
     
  4. Jun 16, 2019
    BobH

    BobH Sponsor Sponsor

    Oviedo, Fl
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    Next.
     
  5. Jun 16, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

    Apopka, Fl
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    How does the inside of the distributor cap look? How about the rotor?
     
  6. Jun 16, 2019
    Cap-n-Cray

    Cap-n-Cray I want to do this again.. Staff Member Sponsor

    Bainbridge...
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    Best test it, need to take it back to Colorado and see if it starts there... :rofl:

    I'll bet you need to look at the carb's jets...
     
  7. Jun 16, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    Wouldn't/shouldn't it be leaner for high altitude?
     
  8. Jun 16, 2019
    Cap-n-Cray

    Cap-n-Cray I want to do this again.. Staff Member Sponsor

    Bainbridge...
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    Don't confuse me with facts... :confused:
     
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  9. Jun 16, 2019
    Greevesman

    Greevesman Sponsor Sponsor

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    If you take a motor that runs well at sea level to high altitude it will run richer as there is less O2 up there.
    On motorcycles we used to drop the needle down one notch.;
    Seems like your situation is not that way as you are richer at sea level. Call one of the old carb specialists.
     
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  10. Jun 16, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    I'm wondering if it ran rich at altitude, eventually fouling the plugs?
     
  11. Jun 16, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    What's the condition of the gas in the tank? Good? Questionable?
     
  12. Jun 16, 2019
    PeteL

    PeteL Member Sponsor 2019 Sponsor

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    This.
    Always get all basics to specification before indulging in speculation and guesswork, including most especially points, and timing
     
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  13. Jun 16, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    That's the problem with Internet diagnosing....speculation and guesswork is going to happen since we have nothing in front of us to look at except for a monitor and a keyboard. :D
     
  14. Jun 16, 2019
    Cap-n-Cray

    Cap-n-Cray I want to do this again.. Staff Member Sponsor

    Bainbridge...
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    And a mouse...
     
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  15. Jun 16, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    Well, yeah a mouse. :D
     
  16. Jun 16, 2019
    mickeykelley

    mickeykelley Well-Known Member

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    Or finger if on an iPad.
     
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  17. Jun 16, 2019
    Twin2

    Twin2 wasn't me Sponsor 2019 Sponsor

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    change of altitude
    so a change of jets would be in order . but you got to pull top off carb to see what jet you are running now
     
  18. Jun 16, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    But if it had a lean jet in there now would the plugs be black?
     
  19. Jun 16, 2019
    Warloch

    Warloch Did you say Flattie??? Staff Member Sponsor

    Falcon, CO
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    Why would you take a perfectly good rig from Colorado to FL where it will rust???

    You people keep stealing our toys :ninja:
     
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  20. Jun 17, 2019
    Steve's 70-5

    Steve's 70-5 Member

    Louisville, Ky
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    Colorado sells a 85 octane gas, might want to dump some 91 or 93, depending on what they sell there, in the tank.
     

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