Question about Yamaha Motorcycles

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Warrior that turns over but has no spark?

I have a 2004 350 Yamaha Warrior that turns over, but has no spark. I went through all electrical connections, cleaning all Molex connectors w/CRC electrical cleaner and blew them out w/an electronic duster(compressed gas) then used dielectric grease. All connections tight w/no loose wires. After doing that w/a new plug, same thing. Turns over like a dream, but still has no spark. I suspect one of three things has failed, ignition coil, stator coil or the CDI control. I believe you can ohm these three parts out, not sure what the resistance specs are for any of these three parts? I would like to know if I can troubleshoot these three parts this way? Any help in pointing me in the right direction would be much appreciated, thank you.

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  • Jeffrey Geyer
    Jeffrey Geyer Jul 26, 2013

    A DEALER WILL USUALLY TEST THE PART IN HOPES OF SELLING YOU A REPLACEMENT PART

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  • 352 Answers

AT ANY ELECTRONIC SPARK PRODUCING DEVICE:
1. A SIMPLE CONTINUITY TEST LIGHT WILL TELL YOU IF CURRENT CAN PASS THRU THE CDI, IGNITION, ETC..

Posted on Jul 26, 2013

Testimonial: "Thanks for the advice Jeff, I don't have a continuity test light. However my volt meter can show me resistance, just not sure where to put my Leeds from my tester on the stator or CDI because there 4 or 6 conductors goin to the Molex connector from the stator and I believe there are 8 conductor taps on the CDI. If I buy a continuity test light can I test each pin or tap on the Molex connectors individually? Thanks."

  • Jeffrey Geyer
    Jeffrey Geyer Jul 26, 2013

    OFTEN TIMES, THE DEALER WILL CHECK THE COMPONENT FREE TO DTERMINE IF IT IS BAD...IN HOPES OF SELLING YOU THE NEW PART

  • Joseph Ward Jul 26, 2013

    appreciate it Jeff, I talked my mechanic and he wants me to bring it in. I was hoping I could norrow it down and see if it something I feel comfortable doing myself in hopes of saving some cash.

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Posted on Jan 02, 2017

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  • 12 Answers

SOURCE: LOSE OF SPARK

Pull the plug back out of the cylinder and ground it against one of the head bolts, kick the engine over to see if you are getting a spark.

Posted on Jan 05, 2009

  • 3567 Answers

SOURCE: its a 1973 yamaha CT1 175 There is no list for it

I haven't worked on that bike in 30 years, but as I recall, the black wire goes to the points. The coil grounds via the mounting bolts.

Posted on Jun 20, 2010

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