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Old 11-03-2012, 04:01 PM   #42
Big Bamboo
Aircooled & Sunbaked
 
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Joined: Sep 2010
Location: Big Island of Hawaii
Oddometer: 3,352
Next time take the timing light with you and when it starts backfiring etc pull over and check that you are getting full advance and that it returns to the S mark at idle. Could be a sticking advance unit... Did you try adjusting the carbs a bit richer at idle like I said?
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