Intake cleaning on FSI and TSI engines
Direct injection put the fuel where the cleaning used to happen. Carbon builds on the intake valves until the engine cannot breathe.
Direct injection engines get dirty intake valves. Instead of injectors spraying fuel, and cleaner, at the intake valves, the fuel is injected directly into the combustion chamber. There is nothing left to clean the sticky tar-like carbon buildup off the intake valves and ports. The buildup just grows and grows in thickness until it blocks off flow into the engine. The engine starts running badly, and will only run better after the intake is removed and the valves and ports are cleaned.
Save money on labor overlap.
2.0L direct injection engines have dynamic intake manifolds with tumble flaps that tune the engine to different rpms in operation. The tumble flap servo, the servo linkage, and the tumble flap feedback sensors can all go bad. These parts are not available as spare parts from VW. The entire manifold must be purchased to obtain any one of them.
So if there are codes concerning tumble flap items contained in the manifold, the manifold has to come off and be replaced. That is an excellent time to clean the intake ports and valves. Killing two birds with one stone is something we love to do. It saves your money by combining labor operations that have overlapping tasks.
Running rough on a direct injection engine?
If your FSI or TSI has lost power, idles rough, or is throwing tumble flap codes, the intake is the first place we look. Call and we will tell you what we find.
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