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-   XT660Z T�n�r� Tech Section ( https://www.xt660.com/forumdisplay.php?f=163)
-   -   Hunting / stammering ( https://www.xt660.com/showthread.php?t=14460)

Tim Cullis 19-07-10 18:24
Hunting / stammering
 
I've left Morocco and am now in Spain but have a new problem in that the bike is hunting at a constant throttle opening. I have the Kev fuel mod so tried adjusting the settings either way to see if that made any difference, but it didn't.

If I open the throttle the response is fine and overall performance feels about the same.

Any quick suggestions?

Tim

maxwell123455 19-07-10 18:38
Along with the usual chain tightness i would look at the cush driver rubbers as i got a similar feeling when my R's cush drives where quiet loose.

Kev 19-07-10 23:09
Did it start all of a sudden?

How was it on the last last fuel tank of fuel?

Is your O2 sensor connected?

warnabrother 20-07-10 04:49
very dirty air filter ?? :102:

Tim Cullis 20-07-10 22:59
It started all of a sudden but I've gone through four tanks of fuel since. O2 sensor is still connected. The air filter looks OK but will check further.

Kev 20-07-10 23:25
Strange one.

You have been running unleaded fuel in it all the time?

tenyamman 20-07-10 23:44
and you have no CAT if remember correctly.........meow

Kev 21-07-10 02:22
Quote:
Originally Posted by tenyamman (Post 133829)
and you have no CAT if remember correctly.........meow
Not to worried about the cat, more worried about the O2 sensor being covered in lead & sending false readings to the ECU.

If you have been using leaded fuel unplug the O2 sensor & let us know if it makes any difference.

deiaccord 23-07-10 19:01
Quote:
Originally Posted by Tim Cullis (Post 133688)
I've left Morocco and am now in Spain but have a new problem in that the bike is hunting at a constant throttle opening. I have the Kev fuel mod so tried adjusting the settings either way to see if that made any difference, but it didn't.

If I open the throttle the response is fine and overall performance feels about the same.

Any quick suggestions?

Tim
Sounds exactly like cush drive rubbers or a tight spot in the chain/chain tension. I had this quite badly on my first chain, made a world of difference when I had it replaced and the cush rubbers changed. Was only noticable on constant throttle, everything was fine if you were accelerating or decelerating.

stuxtttr 31-07-10 17:43
Just a thought but have you fitted an inline fuel filter ?

just check it is flowing through in the right direction !

happened to me on a ccm and caused no end of bother until I realised what I had done.

Hope you get it sorted soon I bet its hot out there.


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