Quote:
Originally Posted by R Leo
With residual cooling system pressure, on a 603 you are most likely looking at much more than a head gasket. Head castings with the number 014 are prone to cracking when overheated and the symptoms are just as you describe. Head replacement is usually reqd.
Another typical problem with 603 engines is failure of the head gasket between the timing chain gallery and #1 cylinder. In that failure, engine lube oil is pumped into the #1 cyl. Massive clouds of oil smoke and sometimes lube oil coming out of the tailpipe but no loss of coolant or residual cooling system pressure.
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I run a "603 engine" it is one of the best and most reliable car engines anyone, including MB, have ever made.
I am talking about the venerable naturally aspirated 603.912 of course, but it is still a "603".
It is imperative that people get their facts right, which always means avoiding all abbreviations and short-cuts, of which this "603 engine" is a classic example.