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2000 Mercedes-Benz ML320

Question: SLUGGISH IN DRIVE AND WHILE RUNNING

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bwynn, Mason, OH, April 02, 2011, 11:42

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After warm-up here a loud vacuum noise as though backpressure from valve in front of engine (2 valves look the same). While idleing engine runs rough so I place in park to bring rpm up.

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2000 Mercedes-Benz ML320

Question: SLUGGISH IN DRIVE AND WHILE RUNNING

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