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Help a Somewhat Newbie Out (sorry so long)

Discussion in 'Early CJ5 and CJ6 Tech' started by xjk9bar1, Feb 24, 2005.

  1. Feb 24, 2005
    xjk9bar1

    xjk9bar1 New Member

    Joined:
    Feb 14, 2005
    Messages:
    10
    I just got the two Service Manuals for my 63 CJ-5 project. F-134 turns over, but just won't start. I replaced the coil/plugs/wires and got a good spark. Compression was in the 80's across the board but still wouldn't turn over with starter fluid. Started to check the timing and found there was no air being "sucked in" through the carb (sorry for lact of proper terminology). Any ideas? My next step is to continue with the tear down and see if the valves or head is shot.

    There was some "shaddy" mod's done also:
    - Electrical fuel pump installed on the frame under drivers seat with direct feed from gas tank (no sending unit)
    - Minimal vaccum lines/breather lines. I think the whole vaccum system was removed
    - Aftermarket oil filter/bracket
    - Holley single barrel carb that appears to be "jerry rigged" from my limited experience with engines.

    The plan is to get the $300 project restored with some slight modifications up and running by NEXT summer. Should I plan swapping the engine? Or overhaul?

    Sorry for long post, I just need a point in the right direction.

    Joey
     
  2. Feb 24, 2005
    blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    Portland Tn.
    Joined:
    Sep 20, 2002
    Messages:
    4,350
    (tapping forhead)


    no air?
     
  3. Feb 24, 2005
    blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    Portland Tn.
    Joined:
    Sep 20, 2002
    Messages:
    4,350
    Plugged exhaust..........
     
  4. Feb 24, 2005
    JAB

    JAB Member

    Genesee, WI
    Joined:
    Sep 9, 2003
    Messages:
    101
    compression in the 80's would indicate that the valves are working, so yeah, I'd look at the exhaust system for starters too. Or...........maybe they really screwed up the intake system or a mouse made a home in there? Or, this would really be terrible, the intake manifold is not only cracked, but a chunk has fallen out letting the air go in there instead of thru the carb. Water getting in thru the carb & then freezing could do this. I've had $50 wonders ($100 & $185, etc.) with worse symptoms that I was able to get going, so with a little luck & perseverance you should be able to do the same! Good luck!
     
  5. Feb 24, 2005
    jhuey

    jhuey Michigan Jeeper!

    Indian River...
    Joined:
    Apr 9, 2004
    Messages:
    415
    We all know it takes three things to make these things run, Fuel-Compression-spark. Simple! right. You shot starting fluid into it and nothing (if you do get a running eng on starting fluid don't keep it running on it you'll melt a piston) . Compression 80, a little low but enough to start, Maybe a leak down check, set the valves. Electrical, timing, make sure spark is happening at the right time. If all three of these things are present than look for the strange things. I've found the strange things are longshots stay with common sense stuff. Although the long shots do win sometimes!! Good luck
     
  6. Feb 24, 2005
    xjk9bar1

    xjk9bar1 New Member

    Joined:
    Feb 14, 2005
    Messages:
    10
    Thanks for the pointer's. I was going to tear the engine down (somewhat) and see how things look. I guess I'll look into the exhaust too.
     
  7. Feb 25, 2005
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
    Messages:
    4,275
    Pull the coil wire off, and then have a friend crank the engine over while you try to hold your hand over the exhaust with a folded rag as a seal. Do you get exhaust pressure? Next feel the carb opening. Can you feel a strong vacuum as the engine cranks? You should be able to feel both.

    Next you could pull the top valve cover and see if the rockers are moving when you crank it. Maybe adjust the intake valves while you are in there, since they are so easy to set. Sounds like you *could* have one or more stuck intake valves, which is very common with an engine that has sat for a long time.

    If all else fails and you still don't have any vacuum, you might want to pull the head to see what's up with the valves. Don't forget to remove the head bolt that is down inside the intake. You have to pull the carb off the head to get to it. Be a nice guy and don't ask how I learned that little trick... :rofl:
     
  8. Feb 25, 2005
    zed

    zed Iowa- Gateway to Nebraska

    central iowa
    Joined:
    Aug 4, 2004
    Messages:
    745
    as w3 (the other steve) said definitely make sure that the COIL WIRE IS DISCONNECTED if you cover the carb with your hand. just in case the engine almost catches. a backfire through the intake is kinda painful when it toasts your hand.

    we're assuming that you are, indeed, getting a spark all the way to the plugs.
     
  9. Feb 27, 2005
    xjk9bar1

    xjk9bar1 New Member

    Joined:
    Feb 14, 2005
    Messages:
    10
    I got lucky (atleast I think I did), I found "complete and running" F-134 for $350.
     
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