Hello, I have a little problem with my Cupra BWJ. I recognized that the car have a small missfire on idling and I have really no idea what can be wrong. I moved all ignition coils and spark plugs and still missfire on same cylinders. Just cylinder 2 is without any missfire. The most counting missfires are on cylinder 4 (about 10 per minute), 1 and 3 (about 2 per minute). The problem is just on idling. During acceleration and drive is everything OK. Compresion test was done and all cylinders are between 170-180 psi. PCV is new. Car has 220KW, R8 ignition coils, NGK sparks and so on. So there are some updates. What could be wrong? What should I check next?
Similar threads
