Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hi There, I'm Clay a certified master automobile technician with 30 years of automotive repair and diagnostic experience.
From your description most likely the Oil Bridge Tubes are shrunk up and not allowing proper oil flow to the lifters. The oil bridge tubes are under the cylinder head covers and provide a path for oil to flow to the lifter galleys. When the oil flow is restricted the lifters will make noise. Have your mechanic remove the valve covers and inspect the oil bridge tubes in top of the cylinder heads for cracking, loose fit, leaks, etc. Replace or repair the tubes as necessary. There are 16 oil bridge tubes, 2 per cylinder on the V-8 engine. You can drive the car to a shop without damage, but keep the engines speed as low as possible.
I hope this information is helpful. If you have any questions or run into any problems let me know.
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