Are we talking about the '83 300SD?
I agree there sounds like air in the system.
Quote:
Originally Posted by rrgrassi
....What do you mean by over rev? These cars with the OM617 would do higher RPM if the IP could keep up......
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I would say that 5,000 rpms is the maximum for these engines. I say at this point the engine could fly apart. The peak horsepower and torque hit well below that point.