No spark and high resistance at mag - need help!

2002 Viper ER

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Joined
Nov 20, 2004
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Location
Ontario
I have a '95 VMAX 600. Last winter it quit suddenly and when i checked for spark I found that I had no spark on either plug. I had no previous sign of a problem. I did hit a bump a couple of hundred feet before it quit but nothing too significant.

Anyway, i have tested the magneto (black and brown wires) for resistance and it shows 640 ohms. The manual says it should only be 310 ohms +/- 10%. What does a high resistance imply? if the mag was sending out too much power, could it have fried the CDI?

I have done quite a few continuity checks on the wires in the ignition system and have found no problems so far.

Thsi is getting very frustrating so I am open to any suggestions anybody may have. i appreciate the help...
 

Have you check the CDI resistance against another?? It could have fried it and it sounds like that stator may be toast....I would call a dealer on this one. Try Larry at North Country Yamaha 715-453-2626 he has done stator checks and may be able to send you in the right direction.
 
...consider checking your kill switch as well, ...try bypassing it.
 


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