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-   XT660Z T�n�r� Tech Section ( https://www.xt660.com/forumdisplay.php?f=163)
-   -   Surging...sorry ( https://www.xt660.com/showthread.php?t=9358)

Gas_Up_Lets_Go 26-02-09 16:43

Quote:

Originally Posted by JMo (Post 84091)
Without wanting to sound all techno-nerdy, that's probably to do with torque loading/power pulses from a big 660 single cylinder vs. a 250... there is much more torque in the Tenere of course...

xxx

Sorry, didn't give you enough info -> TT600RE

Hence the wondering.......

JMo 26-02-09 17:40

Ah, fair enough... I can only imagine the Tenere cush rubbers must be made of cheese then...

xxx

tripletom 26-02-09 20:35

If it's any consolation, when I had my Guzzi V11 one of the hot topics was always that the cush drive rubbers were too hard and there were many ways of drilling, replacing etc them to improve things! :bricks: :)

Gas_Up_Lets_Go 27-02-09 08:50

Quote:

Originally Posted by JMo (Post 84100)
Ah, fair enough... I can only imagine the Tenere cush rubbers must be made of cheese then...

xxx

Cool, I've a nice bottle of Port downstairs when I replace them I'll have a bite to see :hahaha[1]:

JMo 28-02-09 00:29

Quote:

Originally Posted by Gas_Up_Lets_Go (Post 84172)
Cool, I've a nice bottle of Port downstairs when I replace them I'll have a bite to see :hahaha[1]:

Hee hee - sadly they are more Dairylea triangles than a nice wedge of mature cheddar...

xxx

deiaccord 30-03-09 10:02

As an update to this I am going in for a 9000 mile oil change at the dealer this Friday and have mentioned the surging to my dealer and he's going to have a bit of a look at it while I'm in.

It was a bit colder today on my commute (1-4 degrees celcius) and I was paying more attention to it but I was aware of the surging at all speeds and in all gears. It seems to be much more noticable in low gear and high revs however (2nd gear at 40mph ish is a nightmare for instance). Obviously this means I am being pushed to keep the revs down and keep in a high gear. Good for economy, bad for fun (doubaly so as it's still a distraction)

deiaccord 01-04-09 21:30

As an update to my last post I've been going through checking everything I can on the bike and there's a really tight spot on the chain. From what I understand a link or two is normal but I seem to have half a dozen links that are significantly tighter than anywhere else on the chain. Googling other forums tells me I have found the cause of my uneven running, plus my sprockets and cush drive appear to be in otherwise perfect nick.
I'll be calling my dealer in the morning to check they have a spare chain they can fit when I go in.

I'd be curious to know what could cause such a tight spot on the chain though?

Outtashape 02-04-09 23:37

Surge/poor rideabilty
 
I'm sorry but I cannot accept the surging/poor rideabilty in traffic of the XT - Yamaha need to sort it out! If I am maintaining a constant throttle opening I expect the engine revs to remain constant too, particularly when flowing in 30mph traffic!!

Have read previous threads accepting this problem as a trait to big singles, have owned old Xt's (even on old SR500!) & not experienced this fault before.

Temperature is not an issue as I have travelled in excess of 50 miles & still experienced the problem, originally I thought it was down to chain tension but a check absolved this.

Therefore, I think that the problem lies with the fuel injection system; given that previous carburettor models were fine.

Bike is due in for a first service next week & I will be making some noise at the dealers, I know it aint fueling right- getting better MPG out of my Shogun!!

To be continued................................... :icon_clown:

JMo 03-04-09 00:00

Quote:

Originally Posted by Outtashape (Post 88462)
I'm sorry but I cannot accept the surging/poor rideabilty in traffic of the XT - Yamaha need to sort it out! If I am maintaining a constant throttle opening I expect the engine revs to remain constant too, particularly when flowing in 30mph traffic!!

I can sympathise with your frustration Outtashape - but just for clarification, you are talking about the XTX (presumably the bike in you avatar picture?) and not the XTZ Tenere - this thread is in the XT660Z section?

I understood the other XT bikes did/do have fueling problems, whereas Yamaha have all but eradicated those on the XTZ - whether it is simply the bigger airbox, a different ECU or any combination of factors...

I'm only saying this as I wouldn't want anyone reading this thread to get the wrong impression, that's all...

I hope you can get it sorted... or buy a Tenere x

xxx

deiaccord 03-04-09 20:45

Dealer changed the chain earlier (got a DID X-Ring 520VM110) and I was totally blown away by how much difference it made.

My bike now feels totally smooth, almost feels like a different bike, and made me remember how good it felt riding my bike home from the showroom the first day i got it nearly 6 months ago.

Cush drive and sprockets were ok so were not changed

http://img231.imageshack.us/img231/9...ngchain.th.jpg

So based on my experience, if you're getting surging/hesitation on the Tenere it could be your chain (with the extra slack required due to the suspension I guess the Tenere is quite sensitive to it being well adjusted and in good order)


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