a loose wrist pin would make noise under decelleration, i think, and would not make it miss unless very very loose, and then it might actually hit something like a valve. the wrist pin if that is it can tick with little or no ill effect on a motor for many miles, i seem to remember. a wrist pin seems unlikely on the robust benz lower end.

if the valve adjuster collapsed completely it might miss, if it were off enough. i don't know the answer, but theoretcially it might.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.