Lately my clutch pedal will be very difficult to depress. But on occasion when parked on a hill after a while it will be smooth and effortless. Anybody have experience with this. Kind of feels like the clutch cylinder going out??????????????

Dennis

stiff clutch is usually the sign of an aging clutch. this will eventually lead to firewall cracking.
when i change the clutch, pres. plate, throw out bearing and throw out bearing guide (metal replacement).
made the clutch light and smooth again..
would definitely change the slave while doing the job..
might want to consider doing the clutch master at the same time..

but I DO know that old clutch parts made my pedal very stiff..

i think the cause of this was the pressure plate and/or t.o.b, as the clutch still had plenty of material left..(changed it anyways)

HTH!
rich
'86 4kq

I hope it is not time for a clutch since it was replaced when the engine was rebuilt about 50k ago but anythings possible. The clutch feels strong and it does not slip or chatter. Thanks for your input, I hope I do not need a clutch anytime soon. I have a feeling that it is a little more difficult than the vw's that I have done!

Since you just replaced the clutch itself (50k is nothing on an Audi clutch), I'd bet the hydraulics are wearing out.
I replaced the clutch and clutch slave cyl when I replaced my engine. The clutch previously was stiff as you describe, it is slightly better now but still not buttery smooth. The only thing I haven't changed is the master cyl.

You are right, doing a clutch in a 4k 5 cylinder isn't easy. I have to pull my gearbox AGAIN and replace it due to a bad reverse gear, a job I seriously am considering paying someone to do for me. No lift = no fun.