before u do any of the above....im guessing its the mk1 gti or mk2??
when u switch ignition on...listen for the fuel pump priming...if u here a buzz sort of noise for a few seconds pump is fine.
next option & very little checked.....rotor arm & distributor cap....even if they look good....change the rotor arm at least as they contain a small resistor which does break down.
Scott
golf mk1 gti 1989
golf mk3 gti 1992
...AND VEEDUB MAD
Scott, Fife
April 2010