Sycning carbs - dial needles bouncing quite a bit

[Guest]

82 GS1100EZ

Warmed up the bike and attached the gauges; idle about 1800 or so. Gauges were bouncing about 20% of the scale, roughly the width of the red zone. I synced so all 4 were bouncing to the same upper limit as carb #3. Watching youtube videos using the same gauges show very little bounce. Any ideas?

(btw, valves adjusted, airbox sealed, new plugs. I'm sure I need a stage 1 jetting kit since I have a 4 into 1)

ooops misspelled topic :-(

[tkent02]

Tighten the little valve screws until the bouncing is almost gone.

[chuck hahn]

Sync the gauges also before trying to sync the carbs. get some tees and some hose and daisy chain them together and connect to one of the outer sync ports on the bike. Start the bike and adjust each dial to be the same. Does no good to try syncing if then dials arent all reading the same.

[bobgroger]

82 GS1100EZ

Warmed up the bike and attached the gauges; idle about 1800 or so. Gauges were bouncing about 20% of the scale, roughly the width of the red zone. I synced so all 4 were bouncing to the same upper limit as carb #3. Watching youtube videos using the same gauges show very little bounce. Any ideas?

(btw, valves adjusted, airbox sealed, new plugs. I'm sure I need a stage 1 jetting kit since I have a 4 into 1)

ooops misspelled topic :-(

As Tom said, there needs to be restrictions in the lines to dampen things out. The Carbtune uses a plug in the vacuum lines with a hole about .030 in diameter

[Chromedome]

Like the guys have said, tighten those screws, eeeeverrrr so slightly, turn them 1/4 and they could very well stop altogether.

[sailorman1617]

Thanks, I'll give it another shot tomorrow. User error :-)