Why TWO fuel Pressure Regulators (D-jet)? - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 10-05-2010, 10:00 AM Thread Starter
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Date registered: May 2005
Vehicle: W123, W116 Wagon
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Why TWO fuel Pressure Regulators (D-jet)?

Found one above the inlet manifold while another under the manifold.

Why do we need TWO?...and how to adjust for smooth running of the engine?

Thanks in advance.

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