| Cleaning the intake manifold flap support, Engine code BLS and BXJ |
Note | Carbon deposits can occur in the throttle valve support through the combination of unfavourable factors. If these are found, e.g. when disassembling the exhaust gas recirculation valve -N18- or the intake manifold flap motor -V157,-, the support will have to be cleaned. |
WARNING | Acetone is highly inflammable. Please observe the accidental regulations and safety notes when handling with highly inflammable fluids. Wear eye protection and protective clothing to avoid possible injury and skin contact. |
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| Remove intake manifold flap connection. |
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| Remove the exhaust gas recirculation valve -N18- and the intake manifold flap motor -V157-. |
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| Thoroughly clean intake manifold flap support, especially around exhaust gas return valve, using commercially available acetone according to DIN 53247 and cleaning brush. |
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| Wipe off intake manifold flap support using a lint-free cloth. |
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| Allow the acetone to evaporate fully, assemble the cleaned intake manifold flap support, replace the seals and insert it back in position. |
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