I have a few questions it might sound a bit stupid but I’ll ask it anyway. I have been told that my scooter (px210) is pinking. I have never experienced pinking before so have no idea what it sounds like. The sound I have is at high revs and it’s like nails in a tin can being shaken about. I have been given some advice about upjetting and have tried a 122, 125, 128, 130, 132 and a 135, With the best results coming from the 128. It’s still rattling with the 128 but not as bad as the others. I have also been told that it could be the timing is this right and If the timing was out could this cause a reduction in top end speed?
Any advice would be great.