View single post by redracer
 Posted: 10-02-2019 12:10 am
PM Quote Reply Full Topic
redracer

 

Joined: 09-10-2012
Location: BROOKHAVEN, Georgia USA
Posts: 648
Status: 
Offline
 The "cylindrical device" on the rear carb is the vacuum actuator for the by-pass valves, one located on the right side of each carb.
This item is "negated/ blocked-off" by either removing it or putting a steel ball in the 90 degree hose coming off the back center of the intake manifold. When doing that, both the bypass valves will have a solid gasket put on to "block" any vacuum leak there.
Again, the "black hose" between the 2 carbs is the 3/16" FUEL(****NOT VACUUM HOSE***) line allowing fuel to go from the front carb choke to the rear carb.
Hope this helps, bruce