Ridemalibu Motorcycle Rentals & Tours – Los Angeles CA
  1. Ciao Guest - You’ve landed at the ultimate Guzzi site. In SoCal? See the SERVICE tab above for the best in service, tires, tuning and installation of our products or custom work. NEW FORUM REGISTRATIONS REQUIRE EMAIL ACTIVATION - CHECK YOUR SPAM FOLDER. ALWAYS TRY A SEARCH BEFORE STARTING A NEW TOPIC - Most questions you may have are already answered on the Forum with FACTS, NOT OPINIONS. PLEASE DON'T BE A DRIVE-BY POSTER: As a common courtesy, check back if you are posting elsewhere on the web. Note there's decades of Guzzi hands-on experienced help on this site, all whom give endless amounts of their time for free; BE COURTEOUS AND RESPECTFUL! There is zero tolerance on personal attacks and off-site links to other Forums or competing products. Also be sure to click on the STORE link also above for our 600+ product inventory, including many of our 100% Made-in-house-USA GTM products and engine kits. We appreciate the consideration, understanding and your business... past and future. And if you haven't seen our MotoCycle (not) art, click on the BUILDS tab above to see our work at our sister business; GT MotoCycles®-- WE ARE ONLINE ONLY - NO PHONE CALLS MADE OR RECEIVED.

83 V50 Ill one cylinder

Discussion in 'Small Block' started by Pakirk61, May 25, 2020.

  1. Pakirk61

    Pakirk61 Just got it firing!

    Joined:
    May 25, 2020
    Messages:
    1
    Likes Received:
    0
    Location:
    Simpson Pa
    Replaced stock ignition with Dyna lll electric due intermittent running on 1 cylinders . A couple of rides on new ignition reverted to one cylinder running . Local shop said on of new coils was bad and replaced it . A couple of rides on new coil its back to running on one cylinder. what is trouble shoot?
     
  2. Martino

    Martino Tuned and Synch'ed

    Joined:
    Sep 24, 2017
    Messages:
    30
    Likes Received:
    3
    Location:
    Upstate NY
    Well, there isn't much left in the ignition circuit - you've got the pickups, then the Ignitors, then the coils and finally the spark plugs so I would suspect that there is an issue with the left ignitor. See attached pic from my V50II. To test that, swap the two ignitors and see if the problem swaps along with it.

    MG-Ignition.jpg
     
    DeadEye likes this.
  3. DeadEye

    DeadEye Cruisin' Guzzisti

    Joined:
    Jun 13, 2020
    Messages:
    365
    Likes Received:
    149
    Location:
    Eastern Canada - Western Quebec
    Nice, having separate circuits for each side makes it straightforward for testing and isolating the issue !
     
  4. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

    Joined:
    Oct 28, 2008
    Messages:
    8,018
    Likes Received:
    855
    Location:
    Huntsville, AL
    V50III used standard points and coils. Doesn't have electronic ignition like the V50II. Switch the coils and see if the fault follows.
     
  5. Martino

    Martino Tuned and Synch'ed

    Joined:
    Sep 24, 2017
    Messages:
    30
    Likes Received:
    3
    Location:
    Upstate NY
    I misread his original post, sorry. Ok, he removed the stock ignition and replaced it with a Dyna 3 electronic but had the same issue. So
    Pakirk61, we need to hear back from you.

    1. Do you know what the problem was with the original ignition system that caused you to replace it with the Dyna 3? Meaning was it the coil that was going bad? If so, what was wrong with it? See pic

    2. After you replaced the system with the Dyna 3, is it the same cylinder (coil) that is not firing as it was with the original ignition system? i.e.: is the issue consistent with the left or right coil?

    3. Have you checked all the wiring going from the pickups all the way to the plugs? Missing wire insulation, cracks, intermittent connectors, wire shorting to frame ground, etc.

    4. When you look at how you have the coils mounted, do you see where it may be possible that the mounting hardware, which will be frame ground, might be too close to either the 12v source or the high voltage output and therefore possibly causing a short?

     

    Attached Files:

  6. Moto-Uno

    Moto-Uno Cruisin' Guzzisti

    Joined:
    Aug 7, 2016
    Messages:
    124
    Likes Received:
    25
    Location:
    B.C
    He hasn't been seen since June , probably a (fill in the blank) . Peter
     
  7. Martino

    Martino Tuned and Synch'ed

    Joined:
    Sep 24, 2017
    Messages:
    30
    Likes Received:
    3
    Location:
    Upstate NY
    Too bad, I always like to hear how things end up. Well, he joined at the end of May, probably when he needed a solution, may have figured it out and then just abandoned. However, if he does come back, I would love to know what the root cause was.
     

Share This Page