The engine appears to have fallen out of Andy's bike.
This week's mystery is a mechanical knocking in Andy V's GSX 750 engine. This knocking started within a few mile of a new
cam chain being fitted. A couple of days were spent eliminating various causes. We now know it ain't valves, rockers, pistons,
big or little ends - the only thing we're unsure of now is the cam chain tensioning blades - they both have unusual wear grooves in them.
The engine has now been removed in order to take it up to Ian's garage for further investigation . . . . . watch this space.