Per the Mercedes tech spec data manual, compression on a healthy engine is 320 to 350 psi. It is more important that the #'s are close to each other than how high they are as long as they are within spec.
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Originally Posted by vstech
in my opinion, none of those numbers are healthy. a warm engine should have over 400 on the pots.
it's possible that the valves need further adjustment. if they were tight, they could have damage that caused them to seat further after you drove it after the first adjustment. readjust the valves and try again...
good luck!
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