it could be phantom knock....check you citeria and go from there. I used to get it when switching gears in the lower RPM range. I knew it wasn't real knock. Do a search on the dsmlink boards for phantom knock to get a bvetter understanding of what it is.
_____________________________________________ Jerrome B. 1995 GSX - Race 1997 GST - Drive 1995 GST - Who the hell knows