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300SD engine knock

Started by KIP, 04 October 2005, 08:13 AM


My 1979 300SD (125K miles - all original) has developed an engine knock.  It sounds like a valve adjuster has come loose.  On inspection, the valves are all ok, but found the cam had worn a little on the front 3 lobes.  Replaced the cam, but still making the noise.  Other than the noise, the engine runs fine, no loss of power, no oil consumption.  Any suggestions?
1966 230SL
1969 300SEL 6.3
1979 450SEL 6.9
1985 300TD
1990 350SDL
1992 500E
1993 500E
2008 GL320 CDI
2013 S63 w/ Perf Pkg


Diesels were only sold in the USA and so your question may not get much help from the international members of this forum. If you don't get much help soon, you may be better posting your question on one of the general MB forums, such as // which has a whole section dedicated to diesels.
1977 450SE [Brilliant Red]
2006 B200