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psmith994

wont start. think its a bad coil.

9 posts in this topic

2001 wr 426. ran fine a couple of months ago. been piecing this thing together for almost a year now. now no spark. none. I think its the coil (do these things go bad?) so ive been looking for one. found a coil for a yz426. will that work or do I have to do a bunch of stuff to it?

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2001 wr 426. ran fine a couple of months ago. been piecing this thing together for almost a year now. now no spark. none. I think its the coil (do these things go bad?) so ive been looking for one. found a coil for a yz426. will that work or do I have to do a bunch of stuff to it?

 

Do you have the battery on trickle charge? Why is the the coil, and not the battery, suspect? (I'm not too familiar w/ the older cycles. Lemme guess: Kick start only, no battery huh...).

 

Anyway, check the grounding terminals. They could have developed corrosion over the storage time.

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Electrical parts don't usually "go bad" just sitting around. Something else has changed.

 

Check your switch gear with an ohm-meter. toggle the switches and look for a change in meter reading (0 ohms = short, infinity = open) as you toggle the switches.

 

Check the connectors, push 'n pull them (carefully, they're old!). Alternatively, disconnect them and eyeball the interior of the connector, looking for dirt / rust / pitting, and take a metal file to the contacts.

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so....I took the stator cover off and found oil on that side. is there supposed to be oil there or is something very very wrong? time to go research :/

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so....I took the stator cover off and found oil on that side. is there supposed to be oil there or is something very very wrong? time to go research :/

There will be oil in there, that's normal. 

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You might have to check at night sometimes it's hard to see. If your pilot jet is plugged from sitting it wont start.

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Nope no spark. Grabbed the coil wire. Nothing. However, the I checked all the ohm readings and everything on the stator, coil and tps checks out fine. Which leads me to the cdi. (insert sad face) is there a way to test these things before I drop 400 bucks on a new one? And is this a common problem?

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