fbpx
Login

 

Jump to Forum..

Ignition

in 912 / 914 Technical Questions 10 years ago
Motor keeps running when both magnetos are switched off.

  • Re: Ignition

    by » 10 years ago

    Is this a brand new installation or an engine that has been running a while and this just popped up?


    Look at the back of the ignition switch connections and up at the two 6 pin connectors and make sure the two white wires are grounded from start to finish. Sounds like a broken connection at either end or possibly the two white wires have been rubbed and abraded and are now broken.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

      
    Report

  • Re: Ignition

    by » 10 years ago

    Its a long shot but one guy I know had the ignition wires connected to 12 volts! he misunderstood the system. He had to turn his master off to kill the engine.
      
    Report

  • Re: Ignition

    by » 10 years ago

    To roger. The motor has done 138 hrs. Can't see any breaks in the 2 wires.
      
    Report

  • Re: Ignition

    by » 10 years ago

    So I take it this just came out of no where and it has been working normal up to this point?
    Do you have separate switches or a rotary switch?
    If this was acting normally then all of a sudden you can't turn it off it has to be either the ignition switch or those wires have broken or have become disconnected somewhere.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

      
    Report

  • Re: Ignition

    by » 10 years ago

    roger, I just developed the same type problem.
    I have a 912 80horse and when I went to shut down, the engine actually "diesled" for three or for seconds.
    I restarted the engine and let it idle at 2000 for about thirty seconds, I shut off the master, then the two toggle switches for the the mags (CDI) simultaneously. The engine continued to sputter for a moment, then died.
    then I shut off the ignition at the key.

    I balanced the engine two days ago, it purrs like a kitten. the mechanical balance is good and I have an 1800 rpm idle at the stops. I did adjust the idle screws under the carbs but I will probable turn that back to the original today during troubleshooting.
    Any ideas?
      
    Report
You do not have permissions to reply to this topic.
Related Topics
Title Category Replies
912 ignition troubleshooting 912 / 914 Technical Questions 1
How to test ignition cable? 912iS Technical Questions 10
Ignition Problems 912ULS 912 / 914 Technical Questions 2
Lane A cylinder 3/4 Ignition Fault 915iS Technical Questions 10
Ignition 912iS Technical Questions 12
Follow Us

Recent Videos

Safety First!

 

To receive critical-to-safety information on your ROTAX Engine, please subscribe to
ROTAX-OWNER.COM

Prize Giveaway!


SUBSCRIBE NOW
to automatically enter this years draw!

Login