Syncing Yamaha FJR1300 Throttle Bodies

In this video I am using the Morgan Carbtune II to synchronize the throttle bodies on my 2005 Yamaha FJR 1300. Each bar shown on the Carbtune manometer is linked to four cylinders of the engine in order from left to right. Each solid line on the graph is 20 mm above the line below. There are smaller ticks between each solid line at 5 mm increments. The factory service manual recommends that the difference between each cylinder be no greater than 10 mm Hg. When I started the procedure there was a maximum difference of 20 mm between cylinders 1 and 2. Upon completion the difference between all cylinders was no greater than 5 mm Hg.

[@Maximxvmax]

Thanks for making this video - it's starting to make sense (to me)

[@techmaven5900]

Does that tool use steel rods instead of mercury?

[@topbanana188]

Hi. How often do you have to do this? What do you actually adjust to get the throttles balanced on a fuel injected bike?

[@newcomer9747]

tho i think i may be wrong

[@455Transam]

You're wrong.
They need throttle body synchs, he's not doing that for entertainment.

[@newcomer9747]

You realize my comments was four years ago?

[@455Transam]

So? You responded didn't you?

[@TuananhNguyen-ve4mi]

the important thing is processing to do dont mention, lol clip

[@newcomer9747]

you don't need to balance an EFI bike. it uses sensors to automatically adjust the air/fuel mixture.

[@stnkpalm]

The service manual or owners manual will tell you how often this needs to be done. You do need to do this on EFI bikes. The FJR is fuel injected and I know that this needs to be done on the BMW boxers with EFI.