Forum, Sanity check please.....after having head work done, I suspect the mechanic replaced the timimg chain 1-2 links off the cam sprockets which has resulted in a rough idle. Does this make sense as to cause? I've eliminated everything else (I think). How do I test/check this? Valve clearance at TDC? Which cylinder valve? What should measurement be. TIA for your help!

1 tooth and it will run, 2 and it will bend valves. I would have the base heights checked on the valves!!! There is a special tool for this.

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Benzmac:
Donnie Drummonds
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS

Thanks BenzMac...The car runs and runs smooth except at idle. Based on your reply, the chain may be correctly installed after all.