hello to all today i got my 2 vacuum gauges to try and sync my carbs
well i can't do it beacuse when i install the vacuum hose instead of all vacuum i'm getting both suction in and air out any body know what would cause this.??

 

Generally there are 4 gauges for synchronizing carbs on the F3's, one for each intake port. Is there any way you can post a picture of how you're connecting your gauges to the bike ?

 

i have 2 vacuum gauge i ran 4 pieces of vacumm hose to each port under carbs i plug the banks 1&2 start with 3&4 then i read here others that had same problem and they were told to use in line restricter to get a reading
but ican't seem to understand what they mean by that or what it looks like so i can goto the autoparts store and buy them