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Old Aug 20th 2018, 08:10 PM   #1
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Clutch going soft after track day

I have a problem of my clutch lever going soft after a track day or 1.5 track days on a weekend event. It happened twice already. Feels very spongy with lots of free travel like there is air in it, and it messes up quick shifter I believe. I had several misshifts in COTA this past weekend at WOT mostly between 5 and 6, but twice between 3 and 4. This started happening mid-second day. The bike wonít shift on those occasions and then stumbles and flashes rev limiter red light. Very unpleasant and annoying.

I run Motul 660 in the front brake and it stays rock solid. But I sort of ignored the clutch circuit. My plan is to flush that with 660 before the next event, maybe the fluid is overheating somehow, i am curious if anyone else has this issue.

Is the procedure to bleed clutch exactly the same as for the brakes? I do brakes myself, but never messed with hydraulic clutch and had dealer do the bleed the last time.

Clutch seems to work just fine on the street. But I havenít been putting lots of mileage on the street lately.
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Old Aug 20th 2018, 08:24 PM   #2
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Have you had the clutch recall done? Clutch slave cylinder internals are being replaced. That may help your issue. I use a mityvac tool to bleed my clutch and brakes.
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Old Aug 20th 2018, 08:39 PM   #3
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Happened to me three time this weekend from 5 to 6 gear. Exactly what you described. Went to false neutral and to rev limiter as you described. Every time at high throttle (not necessarily WOT).

And the clutch lever going limp at the end of the ride. To the point that the lever pulled all the way and the engine bogged down and shut off at the traffic light a few times. Went to the dealer and they bled the line and the friction point went all the way up to about 20% of the travel(made contact barely pressing the lever. Was like riding a different bike. Happened so slowly didn't realize it was happening.

They did mention that there's a bulletin to replace the slave. I guess it will let air in slowly. The vibration at spirited rides make the air in faster?

Anyways... They'll have the parts coming in soon.

I know now where the contact point should be. Forgot all about it since it happened so slowly.
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Old Aug 21st 2018, 09:10 AM   #4
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I was at my dealer yesterday asking about this, and they said that there were no recalls for my bike (which was made in may). I wonder if this bulletin isnt really an active recall, yet.
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Old Aug 21st 2018, 09:16 AM   #5
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Originally Posted by spinkick View Post
I was at my dealer yesterday asking about this, and they said that there were no recalls for my bike (which was made in may). I wonder if this bulletin isnt really an active recall, yet.
Take your VIN and put it in the Ducati website, that will tell you and not what they think
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Old Aug 21st 2018, 09:22 AM   #6
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Yep, did that, nothing. They looked it up in their computers as well.
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Old Aug 24th 2018, 04:12 AM   #7
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I have the same issue. The slave recall was performed before I got the bike. The dealer has bled the bike 3 times, but I know bleeding isnt the problem. I believe the slave is letting air in once it's very hot.

My patience is wearing thin with this problem.
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Old Aug 24th 2018, 07:42 PM   #8
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I took the bike to the dealer for Akra install today and they reminded me that the clutch recall (slave) was done for me last time. So that on its own didnít make a difference for me.

My plan is to flush the clutch with Motul RBF 660 and hope that it will fix it. Not much hope otherwise.
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Old Aug 25th 2018, 12:03 AM   #9
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Ktm has the same problem from time to time. The guys fit a Oberon slave if I remember correctly.i know you shouldn’t be spending the money on a expensive bike under warranty, but sometimes the aggravation is not worth waiting for warranty.
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Old Aug 25th 2018, 06:40 AM   #10
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I’ve never owned an Italian bike that did not need a clutch bleed and rear brake bleed a few times during the riding season. It’s just what they do. My Priller RSVR was the worst to the point I carried a spanner wrench, plastic tube, and cloth with me in case it needed a good burb, to get air out. The rear brake would go soft every 1 k miles or so and I bled it with a mighty Vac system.
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