Repair Diagnosis/Top-End Rebuild?

onanysunday wrote:

...never checked valve clearance in the 6xxx miles I've put on the bike....

Screw MaKaw and the manual she rode in on! :woohoo: :laugh:

One question on these carbs..Is it normal to have a sound like birds "twittering" in synchrony lightly emanating from newly synced carbs? This new noise has coincided with getting them synced-the noise wasn't there before..I think it may be the sound each carb makes as it gulps air? Doesn't sound terrible but it does sound like light repetitive twittering (and can only be heard at idle) The noise goes away as soon as I give it a little gas.

At least one, and probably more, of the carb holders (manifolds) has a vacuum leak.

Check the rubber plugs on the intake manifolds as they will age and crack possibly causing the twitter you hear. Z1 enterprises has new ones. If this is not it check the manifold screws for tightness around the carbs.

steell wrote:

One question on these carbs..Is it normal to have a sound like birds "twittering" in synchrony lightly emanating from newly synced carbs? This new noise has coincided with getting them synced-the noise wasn't there before..I think it may be the sound each carb makes as it gulps air? Doesn't sound terrible but it does sound like light repetitive twittering (and can only be heard at idle) The noise goes away as soon as I give it a little gas.

At least one, and probably more, of the carb holders (manifolds) has a vacuum leak.

you might want to square this away quick as an air leak in that area can result in piston meltage due to a lean condition..