Originally Posted By: accent2012
I wonder how my Accent looks like. It is also a direct injection engine with 30k miles.
Hyundai recommends the use of techron fuel additives. However, since owning the car, the performance of it really hasn't degraded.
Fuel additives will not help the situation since the fuel is being directly injected in to the chamber, sure the bottom of the valves will be cleaned, but nothing is able to clean the top of the valves, ( see my pic ).