Carbon Deposits and Direct Injection Engines
The primary cause of these problems is that fuel and added detergents are not hitting the back of the intake valves.
Mercedes-Benz Cylinder Head Cover Leak
Field inspections of suspected cylinder head cover oil leaks have revealed that unnecessary resealing is being performed when the cylinder head cover is not the root cause of the leak.
Cylinder Head Bolt Sequence
No doubt you have experienced this before while reassembling a cylinder head: You’re either refitting a newly machined head or changing out the head gasket and you can’t find the torque specs or the proper bolt sequence. The machine shop didn’t include the info when it sent the head back and the gasket packaging isn’t any help, either. So, the work has to stop and you have to go hunting for the specs.
