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Re: puffing sound coming from carbs

Posted by LukeM on Oct 09, 2012; 11:58pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/puffing-sound-coming-from-carbs-tp4030497p4030633.html

Hmm...
Let's hope this isn't the case, but what about a bad vacuum diaphragm on carb #3?  I understand you won't find out until you pull the carb(s) apart. They can be pretty pricey, and not repairable if memory serves.

Also, would it help to put little neoprene o-rings on the sync vacuum screws?  A bent washer or a bent screw could lead to a vacuum leak.

Just some thoughts.
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.