If you own a car that is equipped with GDI engine, you may be experiencing cold start misfire, high fuel consumption and probably loss of power. This may be due to carbon build up on the intake valves of your GDI engine. If it is confirmed or you are suspecting that there is carbon build up on the intake valves of you engine, how you have you been tackling the issue or intend to tackle the issue?

Have been trying to research the best method of removing the carbon with less stress( without having to remove the intake manifold). Yet to see very effective method without intake manifold removal.

Gazzuzz