[W126 Coupe] timing chain noise

[Rgray1016 at aol.com]

this is for Helmut  (timing chain)
    the difference between early and late diagnosis and  correction of timing 
chain:
        about $400-500 for parts if  you fix it yourself (chain, rails, 
gaskets, etc)
        OR $$$ up to new engine  depending on damage when rail breaks !!!)
            (when  a rail breaks....chain jumps teeth on the cam sprocket(s), 
valves open when  they should be closed, pistons hit valves which break off 
and become like  schrapnel inside the cylinder, destroying heads, and sometimes 
blocks)
 
    r/ bg 
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