Piece of pi55 to change.Remove engine cover, Disconnect and remove coilpacks, Remove old Plugs, Insert new plugs, replace coilpacks & re-connect Coilpacks, Replace engine cover, Job DoneThe correct Part no. for a GTi is - 101 905 631 H
If this doesn't sort it then it could be either the PCV or the N75 valve.
#2 PCV that what is was on my GTI, cheap and easy fix to replace, with new upgraded PCV from VW
Hi Richard. Sorry to hear you're still having an issue with the car, but good to know it's not the coilpacks! I e-mailed Jim at Star Performance at the tail end if last year to describe the same symptoms and he said it sounded like 'the valve at the top of the engine'. I haven't yet had time to go and see him about it, bit will get him to attend to it early next month as the car is due a service then anyway. Is this 'valve at the top of the engine' the PCV which is mentioned in Hurdy's post?Cheers mate.