I will be showing you have to clean your intake valves by hand. The intake valves on direct injection cars do not have fuel pass over them like port injection cars. Because if this, carbon will buildup on the valves and valve stems which can lead to issues or poor car performance. This service should be done if your car has not had the valves cleaned yet. Cleaning your valves can improve your cars efficiency, idle, performance fuel economy etc. It also is preventative maintenance for when too much carbon buildup exists it could not let the valves seat in place properly and could damage the valves.

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