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Our 99 Yamaha Grizzley 4 wheeler turns over but has no spark. We have replaced the rectfier assy and the ignition coil assy but still have no spark. It was running fine earlier this summer but then just quit and will not start. What would you suggest that we should look at to get spark.

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  • annvanbockel Oct 01, 2009

    Yes, we replaced the spark plug and checked the wire with a meter.

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  • Sport & Outd... Master
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You have tried new plugs...right? I didn't seeyou mention it. Have you checked the plug wire? With a meter?

Posted on Oct 01, 2009

  • Craig Butler
    Craig Butler Oct 01, 2009

    How's the battery doing? Is it turning over strong? Have you done an inspection on all the wiring?

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10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
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Hi, Anonymous and the usual suspects are:
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For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
http://www.r6-forum.com/forums/57-garage-mechanical-help/38102-00-r6-turns-over-but-no-spark.html
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4. Loose connection at ignition coil or plug between ignition sensor and module.
5. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose.
6. Faulty ignition coil or electronic control module or CDI box.
7. Faulty CKP, CMP, or BAS sensor.
8. Faulty ignition switch.
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10. Security alarm failing to disarm needs reset
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Hi,

Firstly, if you are not a mechanical person you should never buy a vehicle that does not run.
However, here are some basic tests.
1. Connect a good battery.
2. Remove the spark plug.
3. Turn the motor using the starter motor or kick starter.
4. check for spark by inserting a new plug into the plug cap. (make sure the plug is grounded).

If the motor turns freely and there is spark, chances are good that the motor will run. This does not mean that the motor is in a good condition. Only with the motor running will you be able to know for sure.

You will now have to source a carb and fit it to the 4 wheeler.
Fitting the carb is not too difficult. Check that the intake manifold is not perished or torn, and remember to use the airfilter.

Enjoy the ride !

Jon

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