Quote:
Originally Posted by norway2
Thank you very much for good suggestions and help so far, have now had the vacuum hoses checked except for those marked yellow in the attached picture because they were difficult to follow because they were hidden under the manifold and miscellaneous. Can leakage in that part of the hoses lead to reduced power on the engine and a lot of smoke from the exhaust? Seems to me that it will be a lot of work to replace them
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Parts labelled 2b & 2c in the above diagram are easy to get at - they are the EGR components and are not under the intake manifold. The pressure modulator/converter unit 2a IS under the intake manifold, so harder to test.
Parts associated with "3" (3a, 3b & 3c) are not fitted to the e53 platform - they control the radiator flaps on the e46 only.