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Yamaha 700 triple misfire on all cylinders - Yamaha Motorcycles

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Hi everyone need help have a 1999 Yamaha sx 700 triple..been having a problem with a miss fire this season.. carbs all cleaned in November.. initial start up is fine. idles mid throttol and wide open..problem is when I get it up to temp..say running 50 mph and come to a stop.. rail road or 4 way stop sign..i get a miss fire or down to 1 cylinder or 2..go to give it throttol and nothing bogs no gain in rpms.. if I let it idle it hit and misses on 1-2 cylinders..will do this till I shut it down...I fire it back up and it runs nothing happen.?????? did this to me every time I stopped heading to a friends house about 30 miles..did it ones at his house..and rode the rest of the night and home with no problem..
thinking cdi box or or smooth capasitor? any thoughts on this? thanks in advance

Posted on Jan 14, 2015


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Posted on Jan 02, 2017


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