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.: XT660.com - The #1 XT660 Resource :. ( https://www.xt660.com/index.php)
-   Fuelling and Intake ( https://www.xt660.com/forumdisplay.php?f=207)
-   -   Fuelling Fix ( https://www.xt660.com/showthread.php?t=55)

Buck 01-08-06 11:46
Quote:
Originally Posted by shaunm
My XT vibrates a lot when you crank the throttle open. My C1 was at -6 I have moved it up to 0, this has smoothed it out quite a lot. Do you know if there is a default initial setting or is this a factory set-up on assembly?

Also where can I find a "map" of the diagnostic menu's, info and adjustments?
One set of diagnostic codes.

http://www.xt660.com/showthread.php?t=53

Storm 09-09-06 15:45
Right then. After some pointers from Mick and Marcus yesterday, I got stuck in adjusting the CO1 setting.

My original setting was +21, and Mick pushed it up to +30. This helped a bit, but it was still a bit lumpy. So, I set it back to +21, then went up in +5 increments until it felt better. I have currently got it set to +46 and that feels loads better than before. I'm not on and off the clutch all the time in traffic, I can now just use the throttle and the engine's torque.

I was going to push it up to +50, but that would be quite a big jump from my original setting, so I'll leave it there and keep my eye on the plug colour as Mick suggested.

John

Buck 09-09-06 20:28
Quote:
Originally Posted by Storm99
Right then. After some pointers from Mick and Marcus yesterday, I got stuck in adjusting the CO1 setting.

My original setting was +21, and Mick pushed it up to +30. This helped a bit, but it was still a bit lumpy. So, I set it back to +21, then went up in +5 increments until it felt better. I have currently got it set to +46 and that feels loads better than before. I'm not on and off the clutch all the time in traffic, I can now just use the throttle and the engine's torque.

I was going to push it up to +50, but that would be quite a big jump from my original setting, so I'll leave it there and keep my eye on the plug colour as Mick suggested.

John
Good news , now you wil be able to enjoy the full potential of a great bike.

PJS 13-09-06 21:40
Adjust C1, what about C2?
 
Should C1 and C2 be adjusted at same value????

What is C2?

CaptMoto 13-09-06 21:55
dear friend, we have covered this issue before in the CO1 setting thread..... but you have probably missed it. Never mind here is a simple explanation again:

since there is no second cylinder on our engine then CO2 is obviously idle. You might ask why does it come with a CO2 setting? because our bikes dash computer setup is the same as the Yamaha TDM which is a twin cylinder bike. Although a few of us have tried to alter the CO2 to extreme settings in both directions + or - it makes no change.

PJS 13-09-06 22:05
Thank you for very quick answer! That explains all....A salesman at my Yamaha dealer said that you would have to adjust both, I thought that was weird....Hmm...From now on I`m only going to ask people on this forum ....never that guy at the Yamaha dealer again. Thank you for a very quick answer

CaptMoto 13-09-06 22:12
You are very welcome,

we please to aim :063:

HRon 19-09-06 10:16
Quote:
Originally Posted by Kev
My bike cut out from the very day I bought it. I took it back to the agents a few times, they had no clue what the problem was, that was a year ago. It was very intermittent.

I then started to do a little research on the fuel injection system. I found away to richen the CO through the dash & moved the throttle sensor up in angle & never looked back. No more cutting out

The bike still ran very lean. A few weeks latter I then played with the Temp sensors. Add two variable resistors & that richen it up nicely.

I have also made 2 spacers for the front fork springs, as I have found the front end starting to sag. Spacer size 37mm outter, 25mm thick, with a 20mm hole in the center. The front end feels nice & stiff & has not topped out with the extra spring tension.
Hi,
I have this problem of cutting out also. I changed the TPS sensor but the problem persists. How exactly you changed the CO so that cutting out is stoped? Or you just have to play with the numbers...?

CaptMoto 19-09-06 10:23
Quote:
Originally Posted by HRon
Hi,
I have this problem of cutting out also. I changed the TPS sensor but the problem persists. How exactly you changed the CO so that cutting out is stoped? Or you just have to play with the numbers...?
You need to do a bit of reading around the fuelling threads within this forum get yourself familiar with the issues that cause the bike to surge and cut out, no 2 bikes behave the same but generally one time or another they all pretty much suffer from these occasional problems. There are a number of ways to interact with it and one is altering the CO1 level on the diag mode and other will be to fit a fuelling mod such as the Kev Mod much cheaper and similarly effective as a power commander which will be you other option but obviously more expensive, meantime we suggest you alter the CO1 and remove the snorkle or drill extra holes in your air box see again threads on how to do that, allowing the bike to breath better and burn fuel more efficiently.

yamaha 16-10-06 14:03
hello

i can t undrstand how i do this

i see the breather on my xtx

how i can set the mod

thanks


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