Before going to Clewiston to meet up with Ken and Gary, I decided to try to f nd the source of knocking in Razzo, my 2005 Vespa GT.
I changed the oil along with the oil filter and air filter a couple of weeks ago.
I knew that those things didn't affect the knocking, but loose rollers in the variator can knock, so I dug into that. Because I had a new belt, variator, outer drive pulley, rollers, slides and o-ring, I made the decision to install all of them to make it totally new.
But it is still knocking, with an irregular idle.
I took it on the 630 mile ride and it ran beautifully, so no problem yet. But I really need to understand the cause.