Throttle Body Sync with homemade manometer?

[SpeedStar]

I was just wondering if anyone has done or is planning to do the Throttle Body Sync with a homemade manometer?
On my Strom, a friend set mine up with tubes connected so I can plug into it with the PVC tubes filled with ATF and adjust until even.

I don't know if this is possible with the XT? Anyone more familiar with the process? Is it possible?

Who will be the first to try it out and document with pics?

 

[switchback]

should be possible but I will not do it. Did it on my badly unsynced Ducati and it made a big difference but if I had the right tools it could have been smoother. My Tenere is as smooth as butter so not planning on messing that up.

 

[~TABASCO~]

I dont have a home made unit.. I have the shop unit and will check mine prolly at 5K miles..... On the FJR its been about 98% dead on and I tweak it every 10K to make it 99%... Butt'aaa -butter-

 

[RMac]

For the 10000km service I asked the mechanic about TBS. His reply was very straight that the computer would show an error code if TBS was out of spec. He saw no error codes reported, end of discussion.

 

[Firefight911]

For the 10000km service I asked the mechanic about TBS. His reply was very straight that the computer would show an error code if TBS was out of spec. He saw no error codes reported, end of discussion.

Interesting as my bike just had the first service completed and my tech indicated the TBS was off a bit (noticeably smoother post service), he adjusted it, and there were no codes. Same thing is written on my work order.

 

[markjenn]

For the 10000km service I asked the mechanic about TBS. His reply was very straight that the computer would show an error code if TBS was out of spec. He saw no error codes reported, end of discussion.

While I agree with the idea that TB sync is non-critical and can be done on a "does it feel like it needs it" basis, I'm skeptical that the onboard diagnostics are setup in the way he describes. There may be some way for the system to detect gross mismatch, but I doubt it monitors the fine-tune of idle sync that is handled by the bleed screws and is recommended to be done every 6K miles.

This sounds like the similar "valves never need adjustment so don't bother" regimen that dealers often give. Great for the dealer to keep bikes moving through the service bay, but it is not necessarily true.

Back to the OP's question, there is no reason you can't use any homemade manometer setup - a manometer is a manometer. Personally, I've owned a Morgan Carbtune for the last decade and would never want to go back to jury rigged solutions though.

- Mark

 

[RMac]

While I agree with the idea that TB sync is non-critical and can be done on a "does it feel like it needs it" basis, I'm skeptical that the onboard diagnostics are setup in the way he describes. There may be some way for the system to detect gross mismatch, but I doubt it monitors the fine-tune of idle sync that is handled by the bleed screws and is recommended to be done every 6K miles.

This sounds like the similar "valves never need adjustment so don't bother" regimen that dealers often give. Great for the dealer to keep bikes moving through the service bay, but it is not necessarily true.

Back to the OP's question, there is no reason you can't use any homemade manometer setup - a manometer is a manometer. Personally, I've owned a Morgan Carbtune for the last decade and would never want to go back to jury rigged solutions though.

- Mark

I actually agree with you. I have encountered this with every Swedish dealer I have discussed this with. "I have never serviced a DL650 with valves out of spec", "TBS sync? Problems starting the bike? No? Well, just ride and be happy". I did the valve check at 15000 miles on my DL650 and found 6 out of 8 of the valve clearances to be tight and in need of adjustment. I told the Suzuki dealer and he was amazed.

 

[Firefight911]

I just read the service manual. It is quite clear. If the throttle body sync is more than 10 mmHg out then they need to be synchronized. The procedure is very simple and straight forward per the manual. Once it is time to do mine again, I will create a post for this if someone hasn't already done it. It mentions nothing about "codes" related to sync status as I am sure most of us knew.

 

[Koinz]

For the 10000km service I asked the mechanic about TBS. His reply was very straight that the computer would show an error code if TBS was out of spec. He saw no error codes reported, end of discussion.

Your mechanic was probably thinking TPS (throttle position sensor). That should definitely show up on the computer. I'm not sure about the TBS showing up as an error on the computer

 

[RMac]

The reason for my post is two fold. Either you guys in the US are super anal or our Swedish mechanics are ... The words fail me. Just interesting that I have not found a mech here who takes the subject of TBS seriously unless the bike is hard to start. Noob out...

 

[Rynn Storm]

Either you guys in the US are super anal

I believe that is a yes... ;D

 

[HoebSTer]

Rmac, some of us come from VSTroms that needed this regularly. My DL1000 needed it 3-4 times in 15k miles.

 

[RMac]

Rmac, some of us come from VSTroms that needed this regularly. My DL1000 needed it 3-4 times in 15k miles.

I know. It was a big subject over on the V-Strom forum. Anyway, guess I ended up hijacking this thread. I for one would like to see a documented description of S10 TBS with pics, so that I can check it out myself sometime.

 

[colorider]

I for one would like to see a documented description of S10 TBS with pics, so that I can check it out myself sometime.

Make that two of us!!! And I know we can find a special place here on the Forum for everyone to find and use the procedure!!!

 

[SpeedStar]

Me too, that is why I asked. Who knows what they are doing and will be the first to document it?

 

[markjenn]

Me too, that is why I asked. Who knows what they are doing and will be the first to document it?

It's in the service manual which is available free in other threads. Its absolutely straight-forward stuff - tap into both intake vacuum on both sides, adjust small bleed screws on the TB's.
- Mark

 

[Firefight911]

It's in the service manual which is available free in other threads. Its absolutely straight-forward stuff - tap into both intake vacuum on both sides, adjust small bleed screw on the TB that is used as teh "standard." This is identified as the one with white paint on it. Do not adjust this screw.
- Mark

Fixed it for ya!

 

[3putt]

I just happen to have a DIY TB sync deal hanging from a hook in my ceiling. Made it up with automatic transmission fluid for the Versys. I will be doing it, but doubt I will be first as my motor is from SINGER. But, since Phil got his done ( I keep forgetting I have a dealer in town, what a deal ) I may look into doing it. LOL

 

[SpeedStar]

I looked into it today and it looks pretty straight forward.
Pull one hose on left side, add a T to it to connect one vacuum line.
Pull a cap on the other side and add the other vacuum line there.
The set airscrew is on the right side, don't adjust that one. The one to adjust was the left one.

I may want to add extensions to the ports to make for even easier syncs next time, and may not even have to lift the tank.
The left airscrew is kind of tucked in there so may have to lift the tank anyway to get to it.

It looks to be much easier than the process for the V-Strom though.