I was given an 87 Sammy with a bad clutch. It ran but not very good. when you gave it gas the RPM's never got very high and it blew smoke out of the tailpipe. I started with the obvious and changed the clutch. When I was finished I tried to start it and had the same problem, only this time I noticed gas running out the bottom of the vapor canister. Any idea's why? I assume this is not a good thing.