For those that don't know, I have '95 8v gti...used and abused.
Everyone seems to be suffering with the same old running issues. thought I'd share my experinces with others...bare with me.
aside from the usual, plugs, leads, coil, relays, bla bla bla I have done two things differently that personaly haven't read anywhere.
1 - if your rocker cover gasket is shot like mine, there is a chance that the sensor (positioned at the back of the engine, pulleys at the front, under the earth strap from the coil) is covered in oil. pull back the rubber boot and check, if its oily clean it and refit the boot and consider changing gasket to prevent further problems.
2 - on the back of the inlet manifold (pulleys being front of the engine) there is a vacum hose with two small green caps on, when these get old they crack...worth checking them too.
I know its vague but hope it helps...these are old girls sometimes its an easy fix