Hey fellows, I am a first time poster with a problem. I have an 87 Venture that keeps fouling out the rear plugs. I beleive they are cylinders 1 & 3. I recently purchased this as a project and boy is it one. I need direction. I have checked the diaphragms and slides, no issues. I put new plugs in the rear and it ran like a scalded dog for about 20-30 miles but has slowly degraded back to a backfiring, two rear cylinders only, beast. When I first got the bike the two rear exhaust gaskets were worn completely out, pipes slid back and fourth inside the exhaust manifold.
Any help would be appreciated and if this has been covered before I apologize. I have searched for old post's regarding this issue and could not find any.
Thanks,
