Sticky clutch?

lolibater · November 6th, 2012, 05:32 PM

My bike operates fine, other than when i come to a stop, in any gear, the idle bounces between 1500 - 2000. I know I had previously stated (a few weeks back) that I had a bouncing idle. That was fixed, and this new bouncing idle bounces a lot faster. I am 100% sure it is unrelated. Usually when I am stopped I'm in 1st gear with the clutch in. If it starts to do the weird idle bounce, I let the clutch out ever so slightly, and then put it back in. After this, it will idle normally, until I start moving, and then stop again.

I have checked to make sure the TB's were synced proper, as well as valves and idle speed.

Thoughts?

Motofool · November 6th, 2012, 05:41 PM

What happens if in neutral?

lolibater · November 6th, 2012, 05:45 PM

I'm second guessing the answer I wanted to put down for that. I will double check in 15 min when I am off work.

Motofool · November 6th, 2012, 05:59 PM

I asked because that is not a common clutch problem; it seems to be a valve or vacuum problem, some kind of resonance.

Check this out:

http://www.austincc.edu/wkibbe/vacuumtesting.pdf

lolibater · November 6th, 2012, 08:19 PM

On a hunch, I drove it around the block for a half hour at 2000 rpm.

Here's why.

The Ecotrons EFI kit had been re flashed to the latest file that I had this past Sunday. I had a bunch of maintenance done, and lots of things with the bike had been wrong but since corrected, so I wanted it to "learn" with the new, correct AFR data.

Since then, I have only driven it on the freeway; 8K+rpms. It probably hadn't clocked data for the low rpms or idle perhaps. I'm going out on a limb for real though, so don't eliminate some other kind of issue yet. It seemed a bit better after that when I took it on the freeway. When I got home I let it idle for about 10 min so it could log idle data.

I will start it in the morning tomorrow and see how my commute goes, especially off the freeway at lights. If it still occurs as it did today, we might want to pursue some kind of mechanical failure.

It happens in neutral too btw.

Motofool · November 6th, 2012, 08:48 PM

If it happens in neutral, the clutch is not the cause of those oscillations of rpm.

Hope is all related to the learning process of the EFI.

lolibater · November 6th, 2012, 08:57 PM

As do I. It happens less in neutral, but it still happens rarely. Thanks.

November 6th, 2012, 05:32 PM	#1
lolibater ninjette.org certified postwhore Name: Rick Location: Napa, CA Join Date: Sep 2012 Motorcycle(s): 2005 ZX6R, 2011 Sprint GT Posts: A lot.	Sticky clutch? My bike operates fine, other than when i come to a stop, in any gear, the idle bounces between 1500 - 2000. I know I had previously stated (a few weeks back) that I had a bouncing idle. That was fixed, and this new bouncing idle bounces a lot faster. I am 100% sure it is unrelated. Usually when I am stopped I'm in 1st gear with the clutch in. If it starts to do the weird idle bounce, I let the clutch out ever so slightly, and then put it back in. After this, it will idle normally, until I start moving, and then stop again. I have checked to make sure the TB's were synced proper, as well as valves and idle speed. Thoughts? __________________________________________________ "The enemy is fear. We think it is hate, but it is fear." - Gandhi

November 6th, 2012, 05:41 PM	#2
Motofool Daily Ninjette rider Name: Hernan Location: Florida Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot. MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16	What happens if in neutral? __________________________________________________ *Motofool* *.................................Never ride faster than your guardian angel can fly* "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí

November 6th, 2012, 05:45 PM	#3
lolibater ninjette.org certified postwhore Name: Rick Location: Napa, CA Join Date: Sep 2012 Motorcycle(s): 2005 ZX6R, 2011 Sprint GT Posts: A lot.	I'm second guessing the answer I wanted to put down for that. I will double check in 15 min when I am off work. __________________________________________________ "The enemy is fear. We think it is hate, but it is fear." - Gandhi

November 6th, 2012, 05:59 PM	#4
Motofool Daily Ninjette rider Name: Hernan Location: Florida Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot. MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16	I asked because that is not a common clutch problem; it seems to be a valve or vacuum problem, some kind of resonance. Check this out: http://www.austincc.edu/wkibbe/vacuumtesting.pdf __________________________________________________ *Motofool* *.................................Never ride faster than your guardian angel can fly* "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí

November 6th, 2012, 08:19 PM	#5
lolibater ninjette.org certified postwhore Name: Rick Location: Napa, CA Join Date: Sep 2012 Motorcycle(s): 2005 ZX6R, 2011 Sprint GT Posts: A lot.	On a hunch, I drove it around the block for a half hour at 2000 rpm. Here's why. The Ecotrons EFI kit had been re flashed to the latest file that I had this past Sunday. I had a bunch of maintenance done, and lots of things with the bike had been wrong but since corrected, so I wanted it to "learn" with the new, correct AFR data. Since then, I have only driven it on the freeway; 8K+rpms. It probably hadn't clocked data for the low rpms or idle perhaps. I'm going out on a limb for real though, so don't eliminate some other kind of issue yet. It seemed a bit better after that when I took it on the freeway. When I got home I let it idle for about 10 min so it could log idle data. I will start it in the morning tomorrow and see how my commute goes, especially off the freeway at lights. If it still occurs as it did today, we might want to pursue some kind of mechanical failure. It happens in neutral too btw. __________________________________________________ "The enemy is fear. We think it is hate, but it is fear." - Gandhi

November 6th, 2012, 08:48 PM	#6
Motofool Daily Ninjette rider Name: Hernan Location: Florida Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot. MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16	If it happens in neutral, the clutch is not the cause of those oscillations of rpm. Hope is all related to the learning process of the EFI. __________________________________________________ *Motofool* *.................................Never ride faster than your guardian angel can fly* "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí

November 6th, 2012, 08:57 PM	#7
lolibater ninjette.org certified postwhore Name: Rick Location: Napa, CA Join Date: Sep 2012 Motorcycle(s): 2005 ZX6R, 2011 Sprint GT Posts: A lot.	As do I. It happens less in neutral, but it still happens rarely. Thanks. __________________________________________________ "The enemy is fear. We think it is hate, but it is fear." - Gandhi

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