We have the A/C working....
We changed the fuel filter... listened to the two pumps... sounded OK.
We also changed the 2 large vacuum hoses from the Idle Control Valve and the hoses from the inlet manifold to valve cover.

No change... its still runs rough and misfires when hot... the hotter it gets the worse it gets...

What is next?
Check fuel pressure?
Check Spark Coil?
Ideas please!

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2009 Mercedes ML320 Bluetec