Vespa GL bad engine sound

Hi Vespa Friend.


I bought a GL, i restoration it, but the engine has a bad sound. I never ever hear working the engine. It has a new crankshaft, piston rod, new bearing, newest piston and ring. Another problem maybe related to, it has not idling. Any idea?

please help me ;)

Hello nyunyi,

that could be some problems.

Please check out following things:

- right ignition timing

- was the piston mounted in the right position?

-do you use the right spark plug?


Kind regards

Mario SIP