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rough cold missing

  1. CBR 600F5 Rough when cold

    Honda CBR 600
    Hello. new on the forum, as I have a problem with my CBR 600F5 2005 in the summer I fitted Sandy Bike spares new downpipes as the old ones were rotten. In the last month the bike has been running rough when cold, but fine as soon as it warms up. It seems to chug along and cough at low revs but...