2002 PW80 Troubles - Yamaha Forum : Your Yamaha Motor Products Community & Resource
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post #1 of 3 (permalink) Old 08-25-2011, 05:59 PM Thread Starter
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2002 PW80 Troubles

Hello everyone,

I was wondering if anyone could tell me the easiest way to test the CDI on my son's 2002 PW80. I am at my wits end with this thing. One minute it will fire great and then the next it won't. I have taken everything apart, including the crankcase cover off and cleaned/scrubbed the stator connections and still nothing. I believe I have narrowed it down to the coil pack, but not quite sure. I think I have voltage coming out of the CDI, but not sure. I do know the two wires coming from the stator is putting something out, because my volt meter goes up when I kick the bike over. Anyone have some suggestions? Thanks.

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post #2 of 3 (permalink) Old 08-27-2011, 11:45 AM Thread Starter
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Ok, I replaced the coil which I had suspected was bad and know I have a spark all the way to the plug cap. When I remove the plug cap, I can see a nice spark coming out of the plug wire. When I put the cap back on, I get a reading from the volt meter but not the plug. Bought a new plug and still nothing. Any suggestions at this point? Need help bad. Tight budget as everyone and can't afford to put it in the shop for them to troubleshoot.
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post #3 of 3 (permalink) Old 09-30-2011, 03:17 PM
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Join Date: May 2010
Location: Eastern Washington, USA
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Did you replace the plug lead (wire)? You say "When I remove the plug cap, I can see a nice spark coming out of the plug wire".
Are you pulling the plug lead and boot completely off of the plug, and still getting a spark inside the boot? If so, your plug lead is probably shorting out and finding an easy route back to ground. If you're getting a spark between the plug boot and the plug, that would be normal.

Have you tried pulling/testing the plug for spark against a good ground on the engine?
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