swapdip Posted March 23, 2012 Share Posted March 23, 2012 Hey all just picked up a 82 XT550. Im trying to diagnose a no-spark issue, perhaps some of you can help. At best, when I kick it over I am only getting -3v to the coil, on both wires. Im sure I dont have my multimeter wires switched, it registers -3. Ive never seen this before in a bike, but then Ive only worked on a couple of them before so Im not quite sure how to go about diagnosing this. Any help would be appreciated. Thanks Link to comment Share on other sites More sharing options...
xt/wr addict Posted October 15, 2012 Share Posted October 15, 2012 sounds stupid but have you taken the kill switch to pieces?? sometimes the contacts go all manky and give a negative reading ( dont know why either) i had this issue with mine but cleaned all the contacts throughout the bike and replaced wires, i ended up also replacing the coil/ ht lead/ and plug cap on the hunt to remedy it, it now sparks but the carb has bits missing ( typically the bits that are no longer available) so it runs like a bag of nails, the predator system doesnt help, it seems to be restricting the output and is really quite Link to comment Share on other sites More sharing options...
Moderator YamaHead Posted October 15, 2012 Moderator Share Posted October 15, 2012 Had a similar issue with my XT550.......ended up being the stator coil. Link to comment Share on other sites More sharing options...
dt502001 Posted October 15, 2012 Share Posted October 15, 2012 Yep either the stator or kill switch can send you metter in to negs if they are shorted to ground. Check to ohms resistance on both. Link to comment Share on other sites More sharing options...
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