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2002 Mercedes-Benz S500 Question: possible internal problem with air pump



Visitor, Virginia Beach, VA, March 02, 2010, 15:09

My air pump in the engine has condensation in it,
how can this happen?

1 Answer
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  • Answer #1

    Bret Bodas from RepairPal Test Shop, March 02, 2010, 15:14

    If the air pump check valve fails, moisture from the exhaust gasses will accumulate in the pump, causing failure.

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