Zip Ties Intake Valves and Manifold Cleaning

Cleaning intake valves on direct injection engines is a common maintenance task due to the buildup of carbon deposits. Unlike port fuel injection engines, where fuel washes over the intake valves, direct injection engines inject fuel directly into the combustion chamber, bypassing the intake valves. This can lead to carbon deposits accumulating on the intake valves over time, affecting engine performance and efficiency.
This is an Audi A6 C6 2.0 TFSI with almost 150k km mileage where valves were never cleaned - interested to see how dirty it is?
First step is removing the manifold.
After removing the manifold, there is direct access to injectors, so it may be a good time to get them checked and cleaned.
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