Vespa grande backfires above 25, won’t go faster

Ľ̷̝̽͒i̶̛̼͑͠ȁ̸̧̛̽m̵̻̟̯̀̅ ̷͎̙̽̊F̶̲̺͑̓ F /
This single post is part of a larger thread. Start from the top or view this post in context.

I just got my Vespa back together, and took it for its maiden voyage. At first it was going fine, but once it got up to tempature after around 10 minutes of riding, it began to backfire with loud pops coming out of the exhaust. I am running a 40:1 mix, it is about 45 degrees out. I am not running a an air filter and it has the stock carb and jetting. Is it becoming too rich?

This single post is part of a larger thread. Start from the top or view this post in context.

Want to post in this forum? We'd love to have you join the discussion, but first:

Login or Create Account