Vespa Grande jetting is rich?.. hmmm I can't tell!

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

I know this has been answered all over but I just can't quite get it. I have a Vespa Grande with a Hi flow airbox and a Techno Circuit pipe...everything else is stock. The original jet was a 49. I purchased a bunch of jets and started with a 63 hoping it would 4 stroke then I would work down from there. problem is, it wont 4 stroke and from what I understand a 63 should be rich for this set up. I did a plug chop with a new plug and it still looks shinny with nothing to read that I can tell. It runs fine and goes about 34mph on the flats...should I mess with it? Oil is leaking from the exhaust port and it wasn't with the original pipe. Any thought? Thanks, Matt

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