95 TSi. i need new valves. how much is a new set? can i put them in myself and is it difficult to do? what all do i need to change out the valves?
The problem is i have no compression in cylinder 3. can i just replace the valves in that one and no others to save money?

 

List of tools needed

Valve spring compression tool - this compresses the spring so you can remove the retainers and pull apart the valve train.
Long needle nose pliers or valve seal pliers - To remove the old valve seals
10mm Deep wall socket w/extension - To properly seat the new valve seals
Lapping tool - This is to properly seat and seal the new valves
Lapping compound - This is spread on the seat of the valve to ensure a good seat and seal
Grease - This just helps you when you placing the valve retainers back in, so they stick.
Tiny flat blade would help also
mechanics magnet

Those would be the tools need just to replace the valves on the head. My guess for the price of each valve would be any where from 12-20$. This is not a extremely difficult job, but it takes a lot of time. You can replace just that valves for that cylinder, but while you have the tools and have it apart check the others for pitting and seal. If your a novice back yard mechanic then I would suggest you have a machine shop do it, unless you feel comfortable then go to town. If you do end up doing this yourself let me know I can write out a detailed how-to for you.