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F134 Starting Problem

Discussion in 'Early CJ5 and CJ6 Tech' started by Griff, Dec 13, 2004.

  1. Dec 13, 2004
    Griff

    Griff Member

    Sylacauga ,Alabama
    Joined:
    Oct 11, 2004
    Messages:
    66
    ok here is the update. New points and condenser--nothing --still cranks but will not turn over. New coil --bam- it turned over --I got out to start to tune the distr. by ear it went dead. --will not turn over again . Pouring gas in the carb does nothing. Still cranks with alot of juice just will not turn over at all. I am at the end of my mechanical skills to solve this. The only thing I know to do is buy a new fuel pump. But would'nt turn over by pouring gas in carb if it was a bad fuel pump? Do I need a new distr. Help! I have never been without my trusty "60"
     
  2. Dec 13, 2004
    A Mandery

    A Mandery Member

    Indianapolis,...
    Joined:
    Dec 2, 2003
    Messages:
    138
    Re: problem 2

    If you have gas and spark, something should explode. Could the plugs be fouled?Are you sure the spark is making its way to the plug (ie bad wire or wires)?
     
  3. Dec 13, 2004
    67cj5

    67cj5 Member

    Oregon
    Joined:
    Oct 15, 2004
    Messages:
    347
    Re: problem 2

    I believe we just discussed this in another thread. FUEL,FIRE, AND AIR. Remove the air breather and lookk down the carb while you cycle the throttle linkage, if there is fuel, then move on the spark. If not troubleshoot the fuel system. If thete is fuel, then check the spark. Remove the spark plugs and ground the body of the plug to the engine and crank it over. Watch for the plug sparking.If it doesnt spark,, then start troubleshooting . Look at your wiring as well if the fuel system is eliminated. Check thru some of the previous threads we just went thru alot with a guy a couple days ago. Check it out.
     
  4. Dec 13, 2004
    maxx

    maxx Banned

    Menlo Park, Ca
    Joined:
    Apr 22, 2003
    Messages:
    171
    Re: problem 2

    Its not always a good idea to start replacing parts. Several things occur when you do this:
    A) we spend money that we dont really have to, if what we replace isnt the problem.
    B) there is a remote possibility to introduce yet another problem with a defective new part. It happens.
    C) it gets frustrating because we are sure the next new part will fix it.

    As mentioned previously, there are three areas to check: spark, fuel, compression.
    Start with the easiest. with the engine & air cleaner off, open the throttle linkage by hand and look down the carb throat. It should shoot a stream. disconnect the fuel line downstream of the fuel pump, hit the starter. Use a can or jar to catch the fuel. It thats ok, you have fuel.

    Remove one spark plug. hook the plug wire back up, and hit the starter. You should have a blue spark. If you dont have spark, work backwards from the plug, wire, cap, rotor, points, coil, condenser, resistor, ignition switch and wire connections. Is distributor loose? Cap on crooked? Rotor burnt? Often with old Jeeps, its electrical problems. Connections, grounds, burned or brittle wires. These switches are prone to giving up without notice.

    If you have spark and fuel, check engine compression. If you dont have compression, It pretty easy to go from there. pull off a valve cover and see if cam is pushing on push rods, etc. Or take dist cap off and see if its turning.

    Hope this helps and keep us posted.
     
  5. Dec 13, 2004
    blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    Portland Tn.
    Joined:
    Sep 20, 2002
    Messages:
    4,350
    Re: problem 2

    F head?
     
  6. Dec 13, 2004
    Griff

    Griff Member

    Sylacauga ,Alabama
    Joined:
    Oct 11, 2004
    Messages:
    66
    Re: problem 2

    Yep F-head
     
  7. Dec 13, 2004
    blevisay

    blevisay Oh Noooooooooooooooo! Staff Member

    Portland Tn.
    Joined:
    Sep 20, 2002
    Messages:
    4,350
    Re: problem 2

    Please dont laugh, THIS IS A SERIOUS answer.


    Change the spark plugs........Trust me.BTDT
     
  8. Dec 13, 2004
    181jeep

    181jeep Banned

    central valley, ca
    Joined:
    Feb 3, 2004
    Messages:
    376
    Re: problem 2

    blevisay,

    You made my day, I started laughing when I read your post......you are so right. I had an F-head that would foul the plugs so bad by lunch time I'd have to change the plugs to make it the rest of the day. What a POS that one was.

    JB
     
  9. Dec 13, 2004
    shoeman

    shoeman Tune for maximum smoke

    Bangor, Me.
    Joined:
    Dec 24, 2002
    Messages:
    54
    First, please quit pouring gas down the carb. You'll wet foul the plugs if you keep it up, and if it backfires through the carb once you may have an interesting experience.
    Like everybody else said, check for spark. Check the dist to be sure it's turning and the points are opening. Actually (just had a flashback from my motorcycle days) pull the dist cap, turn key on, and use a screwdriver to open the points or just use it to short them if they are already open. You should get a snap and spark at the tools tip. If not it'll be in the wiring from the dist to the coil or coil to +12feed.
    You got a glass topped fuel pump? If so, can you see gas in it? How old is the gas in the tank and how long since the patient last ran?
     
  10. Dec 13, 2004
    kamel

    kamel Senior Curmudgeon

    Erlanger, Kentucky
    Joined:
    Jun 10, 2003
    Messages:
    891
    If you were trying to time the engine by ear, you ought to beg / borrow / or steal a timing light and time it by instrument.

    Everyone else is right, fuel, spark, compression. However, if you have maladjusted the timing then the spark may not be occurring at the right time to make it run.

    In addition, if the timing gets too far off and you crank it you may start a fire.
     
  11. Dec 13, 2004
    vanguard

    vanguard

    Make sure the small wires coming to the coil are tight too. I screwed this up one michigan February at the carwash. Not an experience I'd choose to repeat. Brrrrr.
     
  12. Dec 13, 2004
    willysnut

    willysnut Banned

    Newnan, Ga.
    Joined:
    Oct 8, 2003
    Messages:
    654
    I would start with the last thing you changed- make sure you installed and set the points correctly and are not grounded to the dist case. By all means change plugs out before proceeding as you prolly fuel fouled them puppies by now. If that still doesn't fix it PM and I will take the problem beast off your hands for a paltry sum. LOL
     
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