Erattic / stuttery engine note

[maxp]

For a few days, when idling, rather than a constant purr, the exhaust note has been jumpy/erratic.

It also affects when pulling off (put foot down and it stutters then about a second later gives some power to me)
Also (!) it was doing it on the motorway today over 65mph it would stutter/do the same.

Its quite disconcerting so any advice appreciated.

Reminds me abit of when you first start driving and you *almost* stalled it, it would go all jumpy

EDIT: Sorry its a 8v GTI (digifant)

[Conker]

When mine did this it was faulty ignition leads.

(PS...  Always remember to state which engine you've got, as it helps with diagnosis)

[maxp]

bump for any other viewpoints?

[nealey]

As said, possible misfire which can be caused by a number of things

Check all the vac pipes are in good condition and not split/adrift.

Also have a look at rubjohhnys tuning guide and get it set up correctly