I recently bought my wife a Piaggio Zip 50 Cat scooter

After getting it all ready for her to ride (service) etc after she has ridden it to Trowbridge from Westbury and viceversa there is a strong burning smell and a greyish brown smoke comes from the exhaust After its been switched off :-/ :-/

The burning smell is i think the paint that some muppet (not me)painted on, burning off the exterior of the exhaust but what could the burning smoke from inside be ??

It is a 2000 X reg and apart from this small issue it seems fine and she is happy with it

If it needs a new zorzt then so be it but I'd appreciate any ideas, as my thoughts were that the cat had gone pete tong !!!

Cheers
Simon