Hi need some advise
My veccy 3.2 gsi recently has started stuttering on startup usually when started cold first thing in the morning, I assumed this would be spark plugs so i got some standard gm spark plugs and got a mechanic to do this today from a friend of a friend, the mechanic apparently was moaning as he said was difficult to do, came back after this was done at 6pm seems to pull better at mid range altho cant be sure, i hope the mechanic hasnt pulled a fast one cost me £60 for this any way of checking he has actually changed them??????
cheers
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