9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
2007 9-3 2.8T with 105k. Just replaced all ignition coils and spark plugs 5 months ago. Last month check engine light came on. Code says cylinders 2,4,6 are misfires. Now, sometimes only 3 cylinders fire, can tell by hp cut in half, although I turn car off, mid driving, turn back on, and the...