vwdsmguy
Veteran Member
My TSI [other car] will eventually have build up on the intake ports and valves. Has anyone tried a spray cleaner in the intake air to clean these ports? The dealer service said it should be cleaned at 80K. I have seen real dirty ports in pictures and it's got to hurt power. If you cleaned the ports/valve, what did you use? This is common on direct injection engines. Would the carbon coming off the port get stuck on an exhaust valve or in the cat?
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