2012 Tenere in the Shop

[tomatocity]

Had made arrangements to have the valves checked in a week... so the next Sunday I rode a group asphalt ride and the Tenere ran well. Monday I rode for daily transportation. The night was cool, the engine ran a bit rough and there was noticeable increase in engine braking. Tuesday morning got ready to ride to Lodi and watch / help Don in Lodi with a few projects. The Tenere tried to start with loud CCT noise. Would not start Had it towed to the dealership on 1/27. Today I discovered they pulled the spark plugs, ran a Compression test and then a Leak Down test.

Compression test: 167 and 171
Standard compression is 96.7
Minimum - Maximum is 83.9 - 108.1

Leak Down was 96% and 96%

They said the leakage was caused by the intake valves

Said they called Yamaha and are waiting for an answer. Also they questioned me what my riding style is and documented it.

I asked them to check the Cam Chain and Timing. Not sure if they will check the cam chain and timing but it has been documented. Waiting for Yamaha with a hopeful attitude.

Thoughts?

 

[jaeger22]

Sure sounds like CCT failed and cam timing is off. The much higher than normal compression is interesting. The normal expected low compression readings are of course due to the compression release buttons on the cam that retract at high speed but lower the compression for starting. I am guessing that the cam timing being off is causing the buttons to be out of sync and ineffective, thereby allowing the full compression.

 

[jaeger22]

Sure sounds like CCT failed and cam timing is off. The much higher than normal compression is interesting. The normal expected low compression readings are of course due to the compression release buttons on the cam that retract at high speed but lower the compression for starting. I am guessing that the cam timing being off is causing the buttons to be out of sync and ineffective, thereby allowing the full compression.

 

[greg the pole]

Tim...
what Jaeger said.
sounds like your cct skipped a tooth, or two.
The tenere intake cam puts huge amounts of pressure on the chain.
when mine skipped (but before we knew it did (not pulling the cover))

Compression test was not successful at tdc because our timing was off.
ditto with leakdown. Once we got it to the actual tdc by not using the marks, leakdown was close to 96%, and never bothered doing compression, just went ahead to sort out the issue.

If it skipped two teeth, then your valves are still good. Ask me how I know, any thing over that...I'm not sure.
I went with a manual cct.
https://thetenerist.wordpress.com/2014/10/12/manual-cam-chain-tensioner-and-valve-adjustment-re-write/

let us know what they find. And for the love of dog!!! Get them to check the obvious thing first, like timing!
riding style?! ::025:: I typically drive through the apcalypse and back, daily....what does that matter!

 

[Dogdaze]

riding style?! ::025:: I typically drive through the apcalypse and back, daily....what does that matter!

Yes, I wondering about that too???? Who cares? The engine doesn't care if I'm riding side saddle does it? ::017::

 

[BUGKILLER]

How many miles?

 

[snakebitten]

Hey Greg,

Great Info, as usual from you.

Can I ask a favor please?
I'm a big fat loud mouth disciple of the Super Tenere. And I really have no regrets or shame for being so.
But this CCT weakness is a threat to my thesis!

Can you PM me or even post where and which manual CCT you switched to?
I'm done with this silly little hydraulic threat.

It will be the third bike in my 45 years of riding that I converted to manual cct. (for exactly the same reasons. one Honda, Suzuki, and now Yamaha)
So I don't mind doing it one bit.

 

[greg the pole]

no worries Snake, and thank you.
I'm working on my new FZ07 right now, and brewing up another post..

i could have sworn I put the link in the blog....I'll update it..
stand by: https://thetenerist.wordpress.com/2014/10/12/manual-cam-chain-tensioner-and-valve-adjustment-re-write/

done!

 

[snakebitten]

Thanks!
You did. My bad. It's on your blog.

 

[greg the pole]

Thanks!
You did. My bad. It's on your blog.

I just updated it today

 

[snakebitten]

I just updated it today

And I thank you.
Mine has been ordered and shipped already from your ebay link.
I won't be bothered with these scary CCT threads anymore.
It is the ONLY serious repeated offender on this otherwise magnificent machine.
Every other legitimate flaw is minor. (loose spokes. Headlight harness, ..........)


Good luck Tomatocity!

I mean that. And I hope you aren't offended that your thread has been used for my selfish gain.

 

[SilverBullet]

..I won't be bothered with these scary CCT threads anymore.
It is the ONLY serious repeated offender on this otherwise magnificent machine.
Every other legitimate flaw is minor. (loose spokes. Headlight harness, ..........)
...

I was under the impression that there have been no offenders with the updated 2014 CCT, let alone repeat offenders. Is the jury still out on this as not enough miles have been logged? I would think by the lack of the ever increasing and lengthening sound of a ticking time bomb after start up that would prove the issue was put to rest?

And if the only true answer is manual CCT what is the adjustment interval? Procedure to adjust requires removing the side case?

_

 

[snakebitten]

Your probably right SilverBullet.
I might be throwing the baby out with the water, abandoning the hydraulic method altogether.

And it might be that I'm a bit offended that YES denied my request for the updated cct. I even purchased the newer version and planned on piggybacking the labor during a valve adjustment coming up.

Regardless, I now just wanna distance myself from the whole Yamaha-hydraulic-cct questionable history.

As for manual adjustment timeframe, that's really not gonna be complicated. For sure you adjust it before it makes the crappy noise mine makes on startup.

 

[Checkswrecks]

And if the only true answer is manual CCT what is the adjustment interval? Procedure to adjust requires removing the side case?
_

Manual adjustment doesn't have an actual schedule for the Tenere, because the bikes were not designed with manual tensioners. Generally, the idea is to lightly rev the engine at an oil change and see if you can hear a slight rattle.

If so, then the procedure is to simply loosen a lock nut, slightly tighten a bolt sticking out of the engine, and re-tighten the lock nut. Other than the actual replacement of the tensioner (one time event), this is all external and done at the aft right of the right-side cylinder.

 

[tomatocity]

I forgot to mention:

When the Tenere would not start there was a Fault Code '14' - Accelerator position sensor signal 1 (throttle angle).

 

[SilverBullet]

...
And it might be that I'm a bit offended that YES denied my request for the updated cct. I even purchased the newer version and planned on piggybacking the labor during a valve adjustment coming up...

I plan to take mine in under warranty before it expires and get the updated part. I don't see how they could deny the claim if you can prove that it's gotten much louder and stays on longer as that is not normal. If they take no action and then later on there's a problem like OP had then you have a valid claim even if your warranty has expired.

_

 

[VAT]

What approx. mileage are you guys experiencing the CCT issue?

 

[trikepilot]

I don't see how they could deny the claim if you can prove that it's gotten much louder and stays on longer as that is not normal. If they take no action and then later on there's a problem like OP had then you have a valid claim even if your warranty has expired.

_

They denied my CCT repair ... cuz it was not "loud enough" yet. I then asked... so you want me to ride up closer to the point of failure and then you'll replace it? They said... "yup!"

There are posts from me in the large thread here at forum detailing my struggles with YES to get the CCT replaced. The kicker was that I was already getting an entire new clutch (basket and plates) under YES so they already had the right side of the engine off and thus 90% of the labor for the CCT already done. It took a few "polite" phone calls to YES in CA and I got them to see the light and they did replace the CCT with the updated part while the case was off. It just should not be that hard to use common sense.

 

[snakebitten]

I only asked. I will rarely do more than that. If my disappointment as a loyal customer doesn't influence the decision, I move on.
Getting too old to FIGHT for what I believe in. Now I just refuse to let em steal my joy.

Love my Tenere. Way more than Yamaha corporate seems to appreciate. But that's fine. I'll fix my bike and treat IT as good as it has treated me.

 

[fredz43]

Seems like another situation with the regional (or whatever it is) YES person not being cooperative. I merely told my dealer's service manager that it was getting noisy on startup on my 2012 and it was replaced under YES with no problem.