Mishimoto 14-18 Chevy/GMC 1500 5.3L/6.2L Catch CanThe third generation Chevrolet Silverado was offered with both 5. 3L and 6. 2L LS engines. These engines feature direct injection, which is great for creating an efficient burn and saving fuel but allows for carbon buildup on the intake valves. As blow by flows over the intake valves, oil and carbon deposits can build up, impeding airflow and eventually preventing the valves from closing. The best way to treat carbon buildup is to prevent it, and