BenzWorld Junior Member
Date registered: Sep 2006
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trying to set the timing
1980 Mercedes 250 W123, 6 cylinder gas engine type 123.921.
Found two different timing specs for my 2500 cc engine and would like to determine which is correct. Does anyone have a source I can go to?
Here are the two listings, from workshop manuals that I found:
1. Model 250 idle 850 +/-50 rpm, 0 degrees BTDC, vacuum hoses attached.
2. engine 123.921, idle 700-800 rpm, 8 degrees BTDC,ignition timing w/o vacuum
I would like to find a manual or online information with specs for the 1980 engine type:123.921, if possible. Thanks for your help.
Last edited by autotune; 01-17-2013 at 12:38 PM.