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Cbr 400 running rough now a again


brooklyn
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Well since Ive got the bike out of the shed last month its been running crap.

Once its started it runs fine, then it seems as tho once its warm it has a miss fire. Ive put fresh fuel in twice, cleaned the carb bowels out which didn't seem to be too bad, put a new set of plugs in and it still runs crap. When riding it will pull ok when the throttle is open at high revs but soon as i let off the power it will run on 3 cylinders (i think)

I cant for the life of me find the problem with it.. Its as though there is a fuel problem but then on the other hand its seems like a spark plug goes down now and again???


Any ideas what else i can try before i take it to a garage as i last resort?? :|

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