Logo
Results 1 to 5 of 5
  1. #1

    Default Yamaha 9.9 - sparks have no fire and pulsar is not delivering voltage

    Hi, I have a 2001 Yamaha 9.9 ELHZ outboard motor....

    Just bought the motor with electric starter. Was running great and after I took 5 day break, the motor start works but the motor will not catch (ignite).

    We've measured all the connections: starter, power etc. are all good. Start invokes and turns flywheel.

    The pulsar only generates 0.49 V when starting. (I ordered a new pulsar with no change).

    Machanic friend I are scratching our heads. Anyone have idea?

    I plan to replace CDI and see if that is the problem but I don't believe it is???

  2. #2

    Default Re: Yamaha 9.9 - sparks have no fire and pulsar is not delivering voltage

    Quote Originally Posted by frankr6591 View Post
    Hi, I have a 2001 Yamaha 9.9 ELHZ outboard motor....

    Just bought the motor with electric starter. Was running great and after I took 5 day break, the motor start works but the motor will not catch (ignite).

    We've measured all the connections: starter, power etc. are all good. Start invokes and turns flywheel.

    The pulsar only generates 0.49 V (spec says it should be 5.0V) when starting. (I ordered a new pulsar and installed it with no change).
    The Charger is producing 4.9V which is within spec.

    Machanic friend I are scratching our heads. Anyone have idea?

    I plan to replace CDI and see if that is the problem but I don't believe it is???
    Not sure if CDI will fix this.

  3. #3
    Join Date
    Sep 2010
    Posts
    19,800

    Default Re: Yamaha 9.9 - sparks have no fire and pulsar is not delivering voltage

    Oil pressure switch ?

  4. #4

    Default Re: Yamaha 9.9 - sparks have no fire and pulsar is not delivering voltage

    @racerone - how do I diagnose this... looked thru manual not finding it

  5. #5

    Default Re: Yamaha 9.9 - sparks have no fire and pulsar is not delivering voltage

    Didn't see anything in troubleshooting for "Engine will not start"... will try to check it???
    Should the oil pressure light flash when starting?
    Key issue is that there is not fire in spark plugs.


    • Page 8-8 CDI Output (Wires O-B)
      Spec Measured
      Open 95V 0.3 V
      Connect 90V 0.03 V


    • Page 8-9 Charger Coil Wires (Br-L)
      Spec Measured
      Open 100V 96-101V
      Connect 150V 6 V *** CDI issue


    • Page 8-9 Pulser Coil Wires (WR-B)
      Spec Measured
      Open 4.0V 1.8 V
      Connect 2.5V 1.4 V



Similar Threads

  1. Replies: 3
    Last Post: 06-14-2020, 08:04 PM
  2. Mercury 25 HP 4-stroke 1999 voltage regulator fire
    By jnoergaard in forum Mercury Mariner Outboard Forum
    Replies: 0
    Last Post: 09-01-2019, 01:23 AM
  3. 1989 mercury 50 3 cylinder sparks but wont fire... please help
    By slatter in forum Boat Electrical Systems
    Replies: 7
    Last Post: 09-16-2014, 02:01 AM
  4. 1997 40hp mercury sea pro voltage regulator caught fire
    By evan_t in forum Mercury Mariner Outboard Forum
    Replies: 1
    Last Post: 05-20-2014, 09:01 PM
  5. Pulsar coil for honda BL100L.
    By Kim Heron in forum Honda Outboard Forum
    Replies: 5
    Last Post: 10-24-2011, 09:03 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •