Smokey dokey !! Mar 11, 2015 19:42:45 GMT via mobile PM Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by andidi on Mar 11, 2015 19:42:45 GMT Guys.My 400n is very smokey ... Any pointers as to why?..... I do also get the occasional backfire too???CheersAndy