Suddenly my MK2 clutch pedal gives no resistance, and is too easy to press in. Yesterday it worked fine.

Does anyone have any experience with this problem?

Kind Regards,
Marius Andresen, Oslo

 

Hydraulic failure. Any leakage from the master cylinder?

 

Absolutely, no fluid, air in lines, will be a leak from master or slave cylinders, a pipe rusted through, or the flexible line at the back of the engine gone.

Find the leak and you will easily solve the issue.

Unless it's a catastrophic failure of the clutch plate or actuating fork but I doubt that.

 

Thanks you both !


I'm struggeling finding a leak. There is of course some small pits of liquid on the floor under the engine, but I can't tell if any of these come from the clutch hydraulic liqid.


I case the leak is small, I have filled some DOT 5.1 Liquid, and started the engine.


Can any of you tell me for how long time the engine should run before I can expext som pressure in the clutch system ?

 

Maruis, you should have clutch pressure without the engine running, the pedal operates the clutch master cylinder which creates the pressure.

If you can't find a leak, get someone to operate the clutch pedal, while you look at the slave cylinder on the gearbox to see if the push rod is moving, if it moves at least 1/2" then you will probably have a problem inside the gearbox on the actual clutch.

Let us know what you find.

 

The most common problem is a leaky slave cylinder.
I'm betting that if the dust boot is removed, all the fluid will come puking out all over the floor.

Master cylinders can have internal leaks too.

 

Marius

Just out of curiosity, is there any fluid in the master cylinder?
If it does not need topping up, Jeff's suggestion means the M/C piston rubbers are cactus.
If it is empty and there's no sign of fluid in the footwell, yes, it's probably the slave cylinder.
It would probably pay to renew all the rubbers in the hydraulics in one hit and refill with nice fresh fluid. But both cylinders should be checked for scoring or pitting as there's no sense in re-rubbering defective cylinders.