P0302 Volkswagen -

Question

Can you please advise whether carbon build up cause this code? The light is on solid. I notice a bit of vibration at idle. The engine does not hesitate on acceleration and power seems ok.

If so, is there an intake cleaning kit or procedure you can do without removing the intake?

Answer 1

You can do a fuel injection cleaning by adding a injection cleaning into the fuel tank which would help remove carbon build up, Most of the misfire are with ignition system such as the ignition coil. you can move the ignition coil and if the misfire moves with the moved coil the problem would be with the ignition coil.