92 Yamaha v4 115 2 stroke - knock?

Boats_mcgee

Cadet
Joined
Jul 25, 2017
Messages
18
https://streamable.com/4nmvkz

Just pulled my boat out for the season, and after finding myself in a no start situation, I find the two carb gaskets (between gasket and motor) were deteriorated. I replaced, and put it back together thinking I found the issue.

Now it starts, but it's running a bit rough, and Smokey.

At the 27-29s mark, there is a knock, or similar, which certainly wasn't there last season!

​​​​​​The smoke looks a bit blue as well.

Compression is 120 across the board, and it appears I have spark!

:(
 
Top