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600 Etec stumbles after clicking up on primary clutch?


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#1 9formula7skidoo

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Posted 06 February 2017 - 09:36 PM

I bumped my TRA clickers from 3 to 5 so I could recoup some extra RPM's. In doing so, I got the extra revs I somehow lost, but now when I am cruising down the trail and punch the throttle, the sled hesitates for a moment, then spikes back up to peak RPM. It's almost like when I hit the gas, it starves for fuel for a split second. It did not have this issue when the primary was on position 3. If I go back to clicker 3, I'm confident the problem will go away, but I will no longer rev out to 8100 (I was at 7800/7900 before). Is there a reason the machine might be doing this?

Edited by 9formula7skidoo, 06 February 2017 - 09:48 PM.

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#2 Tneave7

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Posted 06 February 2017 - 10:38 PM

Just got off mine and it's doing the same thing, I've only owned the etec for about 300 miles, the previous owner had the belt riding way high in the secondary and the sled ran great but the belt bothered me... I put a new belt on and dropped the belt in the secondary it hit the Rev limit all the time... really weird I have a 2013 600etec....

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#3 Daag44

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Posted 07 February 2017 - 01:43 PM

Is it starving for gas at that RPM?


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#4 9formula7skidoo

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Posted 07 February 2017 - 01:53 PM

Is it starving for gas at that RPM?



I'm not sure. Although I would guess not. If it was starving for fuel at that RPM with the clickers on 5, wouldn't it have starved for fuel with the clickers on 3? I think it's clutching related. This happened on my 2016 600 last year also. I installed DJM's clutch kit (OEM parts) and it did the same thing, but I sold the machine before I could remedy it.

Edited by 9formula7skidoo, 07 February 2017 - 01:54 PM.

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#5 Daag44

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Posted 07 February 2017 - 05:18 PM

I'm not sure. Although I would guess not. If it was starving for fuel at that RPM with the clickers on 5, wouldn't it have starved for fuel with the clickers on 3? I think it's clutching related. This happened on my 2016 600 last year also. I installed DJM's DJ's or Dynamo^Joe's clutch kit (OEM parts) and it did the same thing, but I sold the machine before I could remedy it.

 

A change in clicker will also change the throttle position for a given rpm. Since ECM calculates load with the RPM and Throttle Position, a change in clicker will change the amount of fuel supplied to the combustion, hence the change the Air/Fuel ratio. I am sure you have read of folks clutching around a problem area. As the clickers are raised, the RPM rises for the same throttle position. To clutch around a problem area such as the zoomies which is a lack of pipe temp, a change is made in the clutching that requires more throttle to get more fuel input.

 

Fuel = Power

 

By the way it is DJ. DJM is another member on DooTalk.


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#6 isthatahemi

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Posted 07 February 2017 - 10:06 PM

I bumped my TRA clickers from 3 to 5 so I could recoup some extra RPM's. In doing so, I got the extra revs I somehow lost, but now when I am cruising down the trail and punch the throttle, the sled hesitates for a moment, then spikes back up to peak RPM. It's almost like when I hit the gas, it starves for fuel for a split second. It did not have this issue when the primary was on position 3. If I go back to clicker 3, I'm confident the problem will go away, but I will no longer rev out to 8100 (I was at 7800/7900 before). Is there a reason the machine might be doing this?


Exact same issue here, clickers on 5... on 3 or 4 the rpm's were less than 8100 and the throttle was linear, but now the throttle response is wonky at higher speeds.
In other news, I get 12mpg and a belt lasts 600 miles of TRAIL riding, a little disappointed at the moment.

#7 Daag44

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Posted 08 February 2017 - 02:37 AM

Exact same issue here, clickers on 5... on 3 or 4 the rpm's were less than 8100 and the throttle was linear, but now the throttle response is wonky at higher speeds.
In other news, I get 12mpg and a belt lasts 600 miles of TRAIL riding, a little disappointed at the moment.

 

Keep a close eye on the topics for the 800 ETECs. Same principals apply.

 

http://www.dootalk.c...es-carbon-belt/


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#8 9formula7skidoo

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Posted 08 February 2017 - 08:05 AM

A change in clicker will also change the throttle position for a given rpm. Since ECM calculates load with the RPM and Throttle Position, a change in clicker will change the amount of fuel supplied to the combustion, hence the change the Air/Fuel ratio. I am sure you have read of folks clutching around a problem area. As the clickers are raised, the RPM rises for the same throttle position. To clutch around a problem area such as the zoomies which is a lack of pipe temp, a change is made in the clutching that requires more throttle to get more fuel input.
 
Fuel = Power
 
By the way it is DJ. DJM is another member on DooTalk.

That sounds like EXACTLY what is happening. And I know who Dynamo Joe (DJ) is. I took DJM's advice and installed all new OEM Ski-doo parts and produced my own clutch kit. I just called it the "DJM" kit.

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#9 auto

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Posted 08 February 2017 - 02:05 PM

worn and/or loose belt will give you that feeling. new carbon belt run on the slightly tight side and I bet your rpms will be back. the only good compromise for acceleration and backshifting is # 3, if your 600 was clutched from the factory like my 800. if you lost rpm, there's probably a reason, adjusting the clickers is just putting a bandaid on it, you're not fixing the problem. OK short term, but you're losing performance in the long run.



#10 isthatahemi

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Posted 08 February 2017 - 02:57 PM

It's not that's simple, you act as if the clutching is spot on from the factory, it's not, and a belt change doesn't fix that. Also, why are pretending that the sled will run consistently? They don't! Freezing cold day, it might pull full RPM, warm day with low atmospheric pressure, and your 500 rpms down. The OEM clutching is compromised, as mileage is a big factor. The 600c carb, SDI, or ETEC, all run better on clicker #4......and the point is that perhaps one must stop there, #5 it feels like an animal at low to midrange, the throttle response gets all wonky, that is the issue.....

Edited by isthatahemi, 08 February 2017 - 02:59 PM.


#11 isthatahemi

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Posted 08 February 2017 - 02:59 PM

And position 3 is a compromise of back shifting and rpm, for mileage, it's not like it's a happy medium, it's a straight up lower performance setup, period.

#12 auto

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Posted 08 February 2017 - 03:44 PM

you're right,it is a compromise, but it's the best one if you have stock clutching. my point was if you had good rpm, then somehow lost it not due to temp or conditions, there's probably something going on.



#13 isthatahemi

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Posted 08 February 2017 - 03:56 PM

No sir mine is new, and the last 600 I owned, and the 3 my buddy has gone through all run a lot less than optimal on 3, and way better on 4, and at all speeds under 80mph, 5 is even more responsive still.
No offence, but I'm going to assume your primary current (or past) sled is not a 600 doo, as the information you are posting is not correct. And if I'm wrong about that, I am sure it's not an X pack with the digital tach.

Edited by isthatahemi, 08 February 2017 - 03:58 PM.


#14 9formula7skidoo

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Posted 08 February 2017 - 04:23 PM

I'm going to click back down to number three and throw on a new 417300288 belt on and try again. 


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#15 Daag44

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Posted 08 February 2017 - 04:35 PM

That sounds like EXACTLY what is happening. And I know who Dynamo Joe (DJ) is. I took DJM's advice and installed all new OEM Ski-doo parts and produced my own clutch kit. I just called it the "DJM" kit.

 

You get can the injectors flow tested, or try running Seafoam, or try the ETEC Dial-A-Jet. My apologies for the DJ/DJM mixup. Two great guys who know their stuff ;)


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