Hard acceleration CLUNK and surge at 3K in 1st gear.

[snakebitten]

I didn't mean that knocking "noises" haven't been reported. Heck, this box of rocks makes all kinds of racket.

I simply meant I hadn't heard anyone describe the unspent fuel being dumped into the CC as an issue. If that was widespread, it would be news to me.

 

[Nimbus]

So mine does the same irritating noise at 3K. The first time I noticed during the break-in riding in 4th gear. I just grabbed a brief handful from about 2700 or so and it did the nasty knock. I've heard it a few times since. I think it may have done it once going up a 19% grade at 4500rpms and big throttle opening. I can't honestly say that I've heard it since I sync'd the throttle bodies and opened the right screw up to 270. That may be because I just haven't paid attention to it, or because I'm careful to accelerate gradually w/o big throttle openings in higher gears at lower revs. I really don't get it though, as it seems to pull quite powerfully from low revs and not appear to be lugging at 3K. I have about 7500 miles on the bike now and it's nicely smoothed out and seems to easily tolerate 6th gear on a flat road at ~53mph/2700 rpms.

 

[CAMTEX]

Mine knocked HARD down low with throttle, I synced the throttle bodies and it is GONE. If it is the same problem / detonation knock (I think it is) get the throttle bodies synced!!!!!!!!!!!!! ::022::

There were others on a similar thread implying operator error that's garbage and I do not think it will go away on its own.

 

[Kelvininin]

Mine knocked HARD down low with throttle, I synced the throttle bodies and it is GONE. If it is the same problem / detonation knock (I think it is) get the throttle bodies synced!!!!!!!!!!!!! ::022::

There were others on a similar thread implying operator error that's garbage and I do not think it will go away on its own.

Operator error it is not. I flog my Victory Vision the same way, for the past 30K miles, and it has never made a noise like that.

Its a good thing I just bought the Harmonizer, I will sync the throttle bodies, or better yet since its under warranty, I may consider taking it to my stealer and letting them do it.

This clucking is not a behavior I would expect from a new bike of any manufacturer.

 

[HoebSTer]

I fooled around with the TCS. It does it both when the TCS is on, setting 1 or 2, doesn't matter, and when the TCS is OFF.

I guess I will just keep and eye on it for now, has me thinking about buying the extended YES just in case.

What has me most concerned about this, since its coming out of break in, I discovered it riding how I would normally ride.

IF this is a motor knock, it can probably be addressed with the adjustments to the mapping and bypass air screw.

You want to swap Sunday late afternoon and see if mine does the same thing. I can ride yours and listen to see if mine did the same thing or not. Just an idear. I have another Tenere rider from Bellingham coming over to help him with something at 3pm. Just let me know.

Jeff

 

[Kelvininin]

You want to swap Sunday late afternoon and see if mine does the same thing. I can ride yours and listen to see if mine did the same thing or not. Just an idear. I have another Tenere rider from Bellingham coming over to help him with something at 3pm. Just let me know.

Jeff

That might not be a bad idea Jeff.

3PM eh?

 

[HoebSTer]

That might not be a bad idea Jeff.

3PM eh?

yep 3-4 pm will work
19134 se may valley

 

[Dallara]

Dallara Id try to explain more, but from past post your just to bright to under stand.And ALL YOUR EXPERIENCE.

Yep, 40+ years working on motorcycles and cars in the dirt, on the street, and on race tracks all over the country (as well as owning a couple of dealerships, etc. along the way)... Never seen, nor heard of, anything one could even remotely refer to as something one could "call it a heat knock,heat and fuel in the cat" on any car or motorcycle of recent manufacture. Certainly not on a current bike with a "fly-by-wire" type of FI/throttle control, much less on one that has been known (like the Super Tenere) to be notoriously lean, especially in the lower rev range. Add to that literally *NO ONE* ever reporting raw fuel getting into the pipes on these bikes under any condition, and you have...

Well, a rather dubious suggestion trying to label the OP's problem as combustion in the catalytic converter. Takes a lot of raw fuel to cause such a condition, and the OP has not mentioned any signs of any over-rich conditions, etc. pointing that way. BTW, while we're at it, try this link...

http://lmgtfy.com/?q=catalytic+converter+heat+knock

SWAG's are one thing... Tossing out "We call it a heat knock,heat and fuel in the cat" as the only possible solution is quite another. Without more information and/or seeing, hearing, and riding the bike in person it's literally impossible to tell what the OP's issue might be.

But hey, maybe you are a clairvoyant mechanical genius... But then again, aren't you the same guy who suggested those cheap self-tapping drain plugs from the corner auto parts store to the guy who stripped the oil drain plug in his sump? Not exactly an elegant nor professional solution, eh?

Personally, I think HoebsTer has the right idea, and stands the best chance of helping the OP out most effectively.

Dallara



~

 

[jaeger22]

As posted above, mine used to do it. But I have not seen it for some time. I tried to make it happen yesterday and the day before but could not make it show up. I did opened the air correction screws up to 270 and sync'd the throttle bodies some time back, so that may have been the cure. Also set the CO to +4. I just didn't think to test for the knock after those adjustments and don't know if they had any direct effect. So for now I just;
::021::

 

[Kelvininin]

Ok so and Update...

The pinging or clunkcing is taking place under almost all hard accel conditions in gears one through 5 but not 6...

Since its a new bike I decided to have a my dealer take a look. After a test ride they checked my oil, asked what fuel I was burning (premium), and stated that everything seemed normal and that "All Super Tenere's ping, try to avoid fuel with alcohol." Well I think that response is BS.

So I am going to try the CO Adjustment, air screw adjustment, sync the TBs, and hope for the best.

 

[HoebSTer]

Ok so and Update...

The pinging or clunkcing is taking place under almost all hard accel conditions in gears one through 5 but not 6...

Since its a new bike I decided to have a my dealer take a look. After a test ride they checked my oil, asked what fuel I was burning (premium), and stated that everything seemed normal and that "All Super Tenere's ping, try to avoid fuel with alcohol." Well I think that response is BS.

So I am going to try the CO Adjustment, air screw adjustment, sync the TBs, and hope for the best.

Kevin, do you have all the info on these steps or need some of the tips at all to access the codes on dash?

 

[thfraser]

With the help of Capslock ::008:: I did the adjustments (take the throttle body air correction screw out 3/4 turn, sync the throttle bodies, and adjust the CO to +4). Along with the CSM it has made the lower end easier to control. It used to surge a little, but this seems to have corrected it. I bet if I did the ECU reflash, it would probably be better, but for now this works.

I did try the heavy throttle roll-on at 3k in 3rd and I got the resulting knock that you described. I tried this before the above adjustment. The engine, in it's stock settings, in my opinion, is just experiencing the good ol knock that happens when you lug an engine.

As you mentioned, try the adjustements and see what happens.

 

[Kelvininin]

Kevin, do you have all the info on these steps or need some of the tips at all to access the codes on dash?

Not all nicely put together Jeff, but I know its contained in this forum somewhere. I guess I need to start researching it. I know there is a Tune and Q coming up, but another month seems like a long time to wait and I am not sure I will be in town. I may get all the stuff together to do this Sunday.

 

[Kelvininin]

With the help of Capslock ::008:: I did the adjustments (take the throttle body air correction screw out 3/4 turn, sync the throttle bodies, and adjust the CO to +4). Along with the CSM it has made the lower end easier to control. It used to surge a little, but this seems to have corrected it. I bet if I did the ECU reflash, it would probably be better, but for now this works.

I did try the heavy throttle roll-on at 3k in 3rd and I got the resulting knock that you described. I tried this before the above adjustment. The engine, in it's stock settings, in my opinion, is just experiencing the good ol knock that happens when you lug an engine.

As you mentioned, try the adjustements and see what happens.

I guess I have a hard time believing that anything passed 3K is lugging it. Sometimes you have to get going in a hurry, and you have to start from idle. It it's going to ping through the lower rage of the RPM, so be it. My Victory Vision experiences exhaust pops on decel, and I learned to live with that so it is possible.

Since I plan on leaving the bike stock performance wise, I would rather not spend a few hundred bucks on an ECU reflash. I do have the PC-V with AT on my Vision, and it works really well. I would rather not spend that kid of money but if I can enrich the low end of the RPM range to keep the S10 from pinging when getting on it, I might consider it. But I will try all the previously mentioned adjustments first. I have been itching to try out the harmonizer anyway.

 

[markjenn]

I guess I have a hard time believing that anything passed 3K is lugging it. Sometimes you have to get going in a hurry, and you have to start from idle. It it's going to ping through the lower rage of the RPM, so be it. My Victory Vision experiences exhaust pops on decel, and I learned to live with that so it is possible.

You very well may have a problem with your bike, but there is no reason to have to be at 3K RPM and lower during hard acceleration from a stop. That's what the clutch is there for. I wouldn't spend money on flashes, PCV's, etc. just to solve this problem if the workaround was simply to use a lower gear and slip the clutch a bit more on takeoff.

- Mark