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[tigers_gonads]

Sometimes when the revs are low and if the brake pedal and clutch pedal are pressed at the same time, the clutch pedal is failing to return to the up position.
Brake fluid replaced 5 years ago.
Brake fluid levels spot on.
Clutch done 100K but the bite is nice with no slip and zero judder from the DMF
Sometimes the clutch pedal is slow to return up. Maybe taking 3 or 4 seconds.

Its a 2.2 TDI
Any ideas ?

[Doctor Gollum]

Fluid is upto three years too old. Change it and report back

May also be a failing clutch master or slave. Had similar behaviour on my then year old Seat Altea.

Fluid first as it's overdue

[Marks DTM Calib]

Master cylinder is usual for these symptoms

[tigers_gonads]

Master cylinder is usual for these symptoms

Yeh that's what I was thinking Mark.
I've never been under the bonnet of it yet.
Easy job or pain in the arse ?


Pm incoming

[tigers_gonads]

Fluid is upto three years too old. Change it and report back

May also be a failing clutch master or slave. Had similar behaviour on my then year old Seat Altea.

Fluid first as it's overdue

Cheers Al
Got to use it tomorrow to have a look at this Audi.
I'll bleed a little fluid off and see what colour it is and report back 

[tigers_gonads]

Just been told by mini me that if you blip the throttle the pedal pops back up again.
Me thinking vacuum leak on the clutch master cylinder   
If so, whereabouts' does it pick up its vacuum from ?

[Nick W]

Just been told by mini me that if you blip the throttle the pedal pops back up again.
Me thinking vacuum leak on the clutch master cylinder   
If so, whereabouts' does it pick up its vacuum from ?

engine driven vacuum pump.
Probably off one of the camshafts.

[Doctor Gollum]

Why would it need a vac on the clutch

Possibly the slave being thrown back out by the centrifugal force from the flywheel which would push the fluid back up to the master, in turn resetting the pedal

Meant to say earlier that ended up changing both, partly because the Dickhead main dealer assumed that it was the slave (because it was a) easier and b) cheaper (warranty job)  lasted a day once they changed the clutch master all was well... Also it only lasted about 800 miles between sticking and complete failure.

[tigers_gonads]

Why would it need a vac on the clutch

Possibly the slave being thrown back out by the centrifugal force from the flywheel which would push the fluid back up to the master, in turn resetting the pedal

Meant to say earlier that ended up changing both, partly because the Dickhead main dealer assumed that it was the slave (because it was a) easier and b) cheaper (warranty job)  lasted a day once they changed the clutch master all was well... Also it only lasted about 800 miles between sticking and complete failure.

Going off a picture I found on t'internet.
Looked like a plastic nipple for a vac pipe 
I'll have a nosey tomorrow when I get back 

[Doctor Gollum]

https://www.civinfo.com/threads/derv-clutch-pedal-modification.370929/

Looks like that plastic nipple may actually be the feed from the brake master

[Marks DTM Calib]

No vac assist, just a feed from the brake res and an output to the slave.

Honda always have issues with clutch hydraulics, I wouldn't mind betting that if you checked the slave cylinder seal in the drivers footwell that its leaking.

[tigers_gonads]

No vac assist, just a feed from the brake res and an output to the slave.

Honda always have issues with clutch hydraulics, I wouldn't mind betting that if you checked the slave cylinder seal in the drivers footwell that its leaking.

I'll wedge my slim figure in there and have a look