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Old 01-31-2013, 07:01 PM
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downhiller downhiller is online now
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Location: des moines
 
Join Date: Oct 2007
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Mein Auto: 2012 hypermotard 796
if its backfiring, you could have cylinder unloading. running rich so one power stroke the spark is put out, but on the second one, it lights causing backfire. which if thats the case, fuel pressure test
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