i sync my carbs last year. no problem..this time around i had to split my carbs to replace a o ring.so i wanted to re sync. now i cant get a steady reading on my gauges. they are all over the place. bike starts fine,choke on choke off works fine. i have check the carb boots for cracks. look o.k. i cant figure out why my gauges are not giving me a steady reading. any ideas?..i did replace the head gasket and all the vavles are in spec.

 

Stupid question: Are you balancing at a high idle, like 2k? I heard that if you try to balance at idle that you'll get bounce.

 

Did you rember to blance the gages 1st? Its a commen overlook. On my set you hook all four lines up to one carb make them read the same then your ready to sync. Good luck man

 

Same problem since I opened the slider vacuum diaphragm .

 

yes i blance the gages with a other vac pump.
i dont have my gague cluster on the bike i dont think im idle that high but ill check that

 

i did go back thru the carb but i didnt check the slider vacuum diaphragm. im going to open that and a give it a check

 

Don't open it cu'z the rubber is shrinked and its hard to align the rubber when u put back the top cover .