Started on the carbs on my "running poorly on 3 cylinders" recent acquisition.
First thing I found was that the airbox breather hoses were switched. I wonder what effect this would have ?
The air filter is quite oily/dirty.
i can't comment on the first pic because my '77 uses a slightly different air box.
people sometimes use sealant there if they are re-using old o-rings and are afraid of a potential leak; so no, sealant isn't normally required/recommended there, although i doubt it would hurt anything, and if you are using new o-rings the goo is completely unnecessary.
winguyjo wrote: ↑Sat Jun 05, 2021 9:17 pmpeople sometimes use sealant there if they are re-using old o-rings and are afraid of a potential leak; so no, sealant isn't normally required/recommended there, although i doubt it would hurt anything, and if you are using new o-rings the goo is completely unnecessary.
Yeah I'll remove all the crap and use new o-rings. I'll watch for leaks when it's up and running.
Thanks for the info !
Looks like the primary jet was clogged in the non-running cylinder. There may have been other issues that I didn't notice, but the carbs were pretty clean. Apparently they were serviced not too long before I bought the bike - but there was some black scale in the bottom of that one bowl that flaked off quite easily, which I bet was the cause.
Anyway I'm happy !
I did a "bench synch" and it seems to be running great as is, but I'll still use the vacuum gauges later ... a project for another day !
