2011 Mercedes Benz ML - Engine Noise

ML 350 Sport CDI Blueefficiency Problem
The Problem
Brian Wilson

Engine Noise
Aug 10, 2019 (5 months ago)
Noise on cold start up, sounds like tappets, lasts a few seconds then clears. No further issue until again starting from cold usually after standing overnight!
Mileage 77500

Car: Mercedes Benz ML
Variant: 350 Sport CDI Blueefficiency
Year: 2011
Category: Engine & Drivetrain
More: Mercedes Benz ML Problems
Fixes: 12,192
Aug 10, 2019 (5 months ago)
Could be hydraulic tappets till oil reaches top end of engine . Could try changing engine oil with correct grade of a good name and OEM engine filter and see if it helps .
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