<VV> Rough Idle and Vacuum Leaks

[Frank DuVal]

You should find new vacuum hose will fit tighter. I have seen hose 
clamps on these pieces, but usually removed them when I installed new 
pieces of vacuum line.

Bending the balance tube so it lines up with the tubes on the head helps 
also. I have seen them 2" out of line.....

FWIW, 5/16" is the same size as 8 mm.

Frank DuVal

David George wrote:

>Lately I have been experiencing a rough idle under load with my Monza 110. I have suspected vacuum leakage (probaby also needs the carbs synced but the Uni-syn is still on order). I noted in a previous post that another member isolated a vacuum leak at the crossover tube between the carbs. After reading that, I ran out and checked mine. Sure enough, my tube fits very loosely into the two vacuum lines. So loosely that I can pull the tube out of the lines with very little effort. The lines are marked "5/16 inch". My question is: what size hose is supposed to be used to keep the crossover tube firmly attached to the two carbs? The 5/16 hose seems large to me. Thanks for the help! 
>
>Dave 
>Newington, CT
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