Throttle Body Sync - Yamaha FZ6 Forums - International FZ6 Motorcycle Community Forum

pyroclastic · 11-20-2007, 07:59 PM

Decided to Sync the throttle bodies on my '07 FZ6 this afternoon. Read the service manual and this forum to get some hints. I bought my FZ6 at the end of June '07 and have 5120 miles on it. I decided that it was time to do some routine maintenance. I have a Morgan Carbtune Pro and decided to put it to use.

Once I had the tank up (used a bungee cord to hold the tank up as another member suggested

) I took the cover off of the airbox and checked the air filter. There was more dirt on the cylinder 3 throttle body location (Cylinder 1 (left) to Cylinder 4 (right) as you are sitting on the bike). I figured that the excessive dirt was due to an mis adjusted throttle body. Thanks to Yamaha the throttle body sync process could not get any easier as they provide four rubber vacuum hoses with plugs in them to connect to your carb/throttle body syncing device. Simply pull out the vacuum plugs and put in a straight coupler and you are off (Autozone sells an assortment of vacuum couplers).

I was amazed that even after 5120 miles that my FZ6 hardly needed any tuning. Cylinder 1 seemed to be the most out of calibration as you use Cylinder number 2 to perform the throttle body sync. Once I had Cylinder 2 calibrated to roughly 22 cmHg, I then followed the service manual to calibrate the remaining cylinders.

After a ride I think that the bike ran smoother, but honestly I think that just readjusting the idle screw did just as much!.

rvbiker · 11-21-2007, 05:12 PM

I was thinking of doing the sync but was not sure what instrument to buy. The carbtune seems to be the only one with numbers on the scale and is necessary for the fz6 since #2 cylinder which is used as a reference has to be a certain value for calibration. Where did you buy yours?

mglowe · 03-03-2008, 04:02 PM

Quote:

Originally Posted by pyroclastic

...honestly I think that just readjusting the idle screw did just as much!.

I sure hope a sync has more value than a simple adjustment of the idle screw... I just dumped some money on a Morgan Carbtune Kit.

I have read from others, not here, that a throttle body sync now and then is good and some say it is not needed. According to the service mechanic my initial 600 mile service, done at 800+ miles, indicated mine were off a bit.

I tend to change the oil filter every-other oil change so I thought that would be a great time to sync and or verify the throttle bodies. Anyway, the service fees at the dealer are through the roof and this procedure is suppose to be easy. I hope I have not waisted my money... ?

**reiobard** · 03-03-2008, 04:35 PM

i am planning of synching at least once a year, probably twice, but i get lazy mid summer... if it is nice enough to work on the bike, that means it is nice enough to ride it. So i choose the later option.

Red Wazp · 05-04-2008, 10:02 AM

Has anyone done a write up with pics on how to do a TBS? I do 07 every oil change because it is so easy. I can do a write up if needed. Posting it will be the hard part.

Fred · 05-04-2008, 11:31 AM

Got it covered.

YouTube - How to synchronize your throttle bodies.

bmccrary · 05-04-2008, 12:27 PM

False Advertising. There were no naked pictures!

-bryan

moo cow · 05-04-2008, 01:03 PM

thanks fred, that is a great video. takes the mystery out of it.
how much did you spend on the carbtune?

Fred · 05-04-2008, 01:28 PM

Hellgate bought it, so I'm not sure how much it cost. Works good, though.

Fred

Red Wazp · 05-04-2008, 06:26 PM

Nice job Fred, when I did a tech day for the FJR they said to sync to #3 and at idle. What is your source for using #2? Not that it really matters that much.

11-20-2007, 07:59 PM	#1
pyroclastic Junior Member Join Date: Jun 2007 Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 0 Feedback Score: 0 reviews	Throttle Body Sync Decided to Sync the throttle bodies on my '07 FZ6 this afternoon. Read the service manual and this forum to get some hints. I bought my FZ6 at the end of June '07 and have 5120 miles on it. I decided that it was time to do some routine maintenance. I have a Morgan Carbtune Pro and decided to put it to use. Once I had the tank up (used a bungee cord to hold the tank up as another member suggested ) I took the cover off of the airbox and checked the air filter. There was more dirt on the cylinder 3 throttle body location (Cylinder 1 (left) to Cylinder 4 (right) as you are sitting on the bike). I figured that the excessive dirt was due to an mis adjusted throttle body. Thanks to Yamaha the throttle body sync process could not get any easier as they provide four rubber vacuum hoses with plugs in them to connect to your carb/throttle body syncing device. Simply pull out the vacuum plugs and put in a straight coupler and you are off (Autozone sells an assortment of vacuum couplers). I was amazed that even after 5120 miles that my FZ6 hardly needed any tuning. Cylinder 1 seemed to be the most out of calibration as you use Cylinder number 2 to perform the throttle body sync. Once I had Cylinder 2 calibrated to roughly 22 cmHg, I then followed the service manual to calibrate the remaining cylinders. After a ride I think that the bike ran smoother, but honestly I think that just readjusting the idle screw did just as much!.

03-03-2008, 04:35 PM	#4
reiobard Samurai FZ Soldier Bike: 2007 FZ6 (The Faster Blue) Join Date: Nov 2007 Location: Hillsborough, NH Posts: 7,613 Thanks: 1,451 Thanked 1,738 Times in 1,118 Posts Rep Power: 126 Feedback Score: 0 reviews	Re: Throttle Body Sync i am planning of synching at least once a year, probably twice, but i get lazy mid summer... if it is nice enough to work on the bike, that means it is nice enough to ride it. So i choose the later option.

05-04-2008, 10:02 AM	#5
Red Wazp Super Member Bike: 2010 KTM SMT, 04FJR1300, 00KLR650,87XT350 Join Date: Mar 2008 Location: Peardale, Ca Posts: 1,810 Thanks: 614 Thanked 1,248 Times in 632 Posts Rep Power: 49 Feedback Score: 0 reviews	Re: Throttle Body Sync Has anyone done a write up with pics on how to do a TBS? I do 07 every oil change because it is so easy. I can do a write up if needed. Posting it will be the hard part. __________________ Burning fossil fuel and loving it!!

05-04-2008, 12:27 PM	#7
bmccrary Touring Mod Bike: 2005 FZ6 Join Date: Nov 2007 Location: Charlotte, NC Posts: 1,691 Thanks: 332 Thanked 630 Times in 289 Posts Rep Power: 38 Feedback Score: 0 reviews	Re: Throttle Body Sync False Advertising. There were no naked pictures! -bryan

05-04-2008, 01:03 PM	#8
moo cow Junior Member Bike: 2005 fz6 Join Date: Apr 2008 Location: athens, ga Posts: 60 Thanks: 0 Thanked 6 Times in 5 Posts Rep Power: 15 Feedback Score: 0 reviews	Re: Throttle Body Sync thanks fred, that is a great video. takes the mystery out of it. how much did you spend on the carbtune?

11-21-2007, 05:12 PM	#2
rvbiker Junior Member Bike: 2005 yamaha FZ6 Join Date: Nov 2007 Location: south dakota Posts: 192 Thanks: 58 Thanked 43 Times in 31 Posts Rep Power: 18 Feedback Score: 0 reviews	I was thinking of doing the sync but was not sure what instrument to buy. The carbtune seems to be the only one with numbers on the scale and is necessary for the fz6 since #2 cylinder which is used as a reference has to be a certain value for calibration. Where did you buy yours?

05-04-2008, 01:28 PM	#9
Fred M em b er e d Bike: See Signature Join Date: Nov 2007 Location: Austin, TX Posts: 1,790 Thanks: 368 Thanked 1,426 Times in 611 Posts Rep Power: 67 Feedback Score: 0 reviews	Re: Throttle Body Sync Hellgate bought it, so I'm not sure how much it cost. Works good, though. Fred __________________ 1990 BMW K75 Turbo (Garrett GT-15 turbocharger. Megasquirt ECU controlling fuel and spark. LC-1 Wideband O2 sensor. Paralever conversion and K1100LT rear wheel. R1100RT front wheel and rotors. K1100RS brakes with custom caliper brackets.) 2007 Yamaha FZ6 (Stebel Nautilus horn, Valentine 1 hardwired with remote display and audio, Mix-It sound mixer modified for hidden installation, Mayer saddle, true dual high/low headlights. Relay, fuse panel and lockdown blocks for all additional wiring. R6 fork. RyanK fender mounts.)

05-04-2008, 06:26 PM	#10
Red Wazp Super Member Bike: 2010 KTM SMT, 04FJR1300, 00KLR650,87XT350 Join Date: Mar 2008 Location: Peardale, Ca Posts: 1,810 Thanks: 614 Thanked 1,248 Times in 632 Posts Rep Power: 49 Feedback Score: 0 reviews	Re: Throttle Body Sync Nice job Fred, when I did a tech day for the FJR they said to sync to #3 and at idle. What is your source for using #2? Not that it really matters that much. __________________ Burning fossil fuel and loving it!!

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