Dear friends:

Please take a look at the attached image first.

On the top of my camshaft (valve) cover, there's a black plastic box which is connected to the throttle linkage assembly. On the front side of the black plastic box is some rubber connectors to which several vacuum hoses are attached. However, there are 5 holes but only 3 attached vacuum hoses.

My question: is my 300SD missing 2 vacuum hoses, or these 2 remaining holes (marked in the image) are not used at all? If it's actually missing 2 vacuum hoses, please take a picture of your 300SD engine compartment and tell me where the 2 missing hoses should be connected to.

Thank you very much.

Eric

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