2009 jetta S 2.5 about two months ago a guy installed a performance air filter for me well recently we hooked up scanner and says cylinder 2 misfire... any ideas would help on where to start trying to fix this issue.... thanks!!
Thank you for the info!! Yah im a lil over 100k miles so ill just change the plugs - if i do discover it is the coil pack- should I change all 5 or am I good with just the one replacement? Thanks again!!
VW recommends coil pack changes with spark plugs every 40,000 miles, but that can get
expensive for me, as I put 1800 miles a week on mine (job). Test the coil pack FIRST,
as indicated, then move to plugs just to know if its the plug or coil pack.