no spark # 2 cyl

Discussion in 'Ford / New Holland' started by Deans, Nov 22, 2010.

  1. Deans

    Deans New Member

    5
    Nov 22, 2010
    I have a 8n ford.I have no spark to #2 cyl.Changed dist and cap, new plug wires.new plugs.New ( rebuilt) dist has about 20 hrs on it.Also changed coil. It has a 12 volt system.Im plumb out of ideas .Please help . thanks Dean....
     
  2. GreenFlyer

    GreenFlyer New Member

    155
    Feb 4, 2010
    If your other cylinders are getting spark, it has to be the distributor, the wire, or the plug. It can not be anything else. On the distributor, did you check the metal inside the cap where the number two cyl wire lead is passed by the rotor? Did you use a spark plug wire repair kit where you have to build each section of the wires, ie. cut and crimp? Check your connections. Use a voltmeter and ground it with the spark plug removed. Turn the engine over and if you are not getting anything, and the other cylinders are sparking, it has to be the wire, connections, or the distributor. Good luck!
     

  3. Mickey

    Mickey New Member

    Aug 14, 2010
    Almost hate to ask but, are you sure there is no spark or just that #2 cyl isn't running? With all you've changed with the ign system it is hard to believe 3 cyl are OK and just a single cyl not getting spark.

    I'm assuming all the parts you've changed is due to #2 cyl not firing. Hard to believe swapping virtually all of the parts and still same condition. At this point my first guess is #2 is getting spark but due to low compression the cyl isn't firing.

    That's my best shot for now.
     
  4. dangeroustoys56

    dangeroustoys56 Collector

    Jul 26, 2010
    Sure fire way to tell whats getting spark or not- pull the plugs- hold em next to a ground ( or get a spark tester), crank the motor and see which ones actually spark . Seeing everything was rebuilt or replaced, it should be a nice blue spark from each one. For kicks and giggles, see if the rotor is actually turning .

    Anyone can get bad plugs or wires- its possible the way things today are made.

    You have checked the carb as well- right? Is gas getting to that cylender?
     
  5. Deans

    Deans New Member

    5
    Nov 22, 2010
    no spark

    Thank you alll.It turned out to be the points.Wow.thanks again Dean....
     
  6. Mickey

    Mickey New Member

    Aug 14, 2010
    Wondering how points could only affect one cyl?????
     
  7. GreenFlyer

    GreenFlyer New Member

    155
    Feb 4, 2010
    I am wondering also. I have never seen or heard of points causing just one cylinder to not fire. Every time I have changed points it was always a 'gap' or 'burnt out, and/or corrosion' issue with them.
     
  8. Deans

    Deans New Member

    5
    Nov 22, 2010
    Fisrt i tryed readjusting the points. same problem. I put a new set in and what do you know we had spark again.I cant explain it .I know it sounds goofy but thats what happened....thanks Dean......
     
  9. GreenFlyer

    GreenFlyer New Member

    155
    Feb 4, 2010
    That is great to know. I have to make a note of it for troubleshooting. Thanks.
     
  10. dangeroustoys56

    dangeroustoys56 Collector

    Jul 26, 2010
    Its possible when it came time to fire #2 on the points, they were a little too hot or had a bad spot- by the time the the next cylender came around it fired. Maybe something with the lobe?

    I used to have a 70's dynamark with a 10HP teccy - it had points and a 'brain box' ( no mounts for a magneto) - i cleaned the points, it would run great till they heated up ( about 20 minutes) , then itd quit. I let it cool down, then itd fire right up again - i ended up selling it before i replaced the points.
     
  11. rsmith335

    rsmith335 RICK THE PLUMBER

    988
    Jun 2, 2010
    Where did you buy the bad set of points? I quit buying electrical stuff at TSC, because of things like that.
     
  12. Deans

    Deans New Member

    5
    Nov 22, 2010
    re/no spark

    Like i said ,i changed the points and she ran great.Next morning she wouldnt start.My bud came over and found that the reastat/ceramic piece on the fire wall was junk.bypassed it and she runs great. That mite explain the no spark to #2 cyl.Thanks for yur help .Dean....
     
  13. manfred

    manfred New Member

    14
    Dec 3, 2010
    Sounds crazy but I had this same thing happen to me today. The third cyl back. Is that #3? Anyway changed cap ,coil, points still no spark. switched wire and plug from next cylinder ,that cylinder fired and the 3rd one back still didnt. It will be a couple of days before I can get back to it but it's making me scratch my head for sure.
     
  14. Ken N Tx

    Ken N Tx Retired

    666
    Sep 20, 2003
    Lobes on the distributor could be worn..Bushing may be worn on distributor shaft.

    Let us know what you find..
     
  15. manfred

    manfred New Member

    14
    Dec 3, 2010
    I am concerned that it is the distributor lobes. Anybody think I may find a happy medium on the points gap that might satisfy all cylinders needs?
     
  16. Mickey

    Mickey New Member

    Aug 14, 2010
    Might be a lobe on the dist but in original post it was stated the dist had been swapped out.

    Why would only one lobe wear?
     
  17. Ken N Tx

    Ken N Tx Retired

    666
    Sep 20, 2003
    Granted one lobe might not wear, I am leaning more towards the worn bushing..
     
  18. Deans

    Deans New Member

    5
    Nov 22, 2010
    You mite try bypassing the reastat. It worked for me.good luck Dean...