I am in process of resurrecting a 94 SL. I just put the engine back together and it runs but poorly. It acts like the valve and/or ignition timing is late. I have been going crazy all summer trying to find a complete repair manual for the car including all engine specs, in particular right now valve timing spec, and all the vacuum and wiring diagrams. I have purchased three "complete" repair programs on DVD and found them to be something quite short of complete. The questions I have at this time are, does ANYONE out there in Mercedes land know where I can purchase a repair manual for an SL and short of that is there somewhere that I can find cam timing spec so I can check the valve timing with a degree wheel and dial indicator. Also I recall seeing somewhere that engine codes can be found without a scan tool. Where can I find the procedure and a code chart as it does trigger the check engine light after driving it for an hour or so. It is apparently not a hard code because when you shut it off the light resets and does not come on again until you drive it for a while. Thanks in advance for any help you can offer.

 

www.alldata.com

 

I've got the DVD's also.......fairly involved as you stated, but I think I can come up with the degrees when Intake valve begins to open at a certain tolerance like .015 inches.....I will check email me at Rosscolor@att.net tomorrow

 

dial indicator will show 2mm lift and Intake valve opens at 34degrees after TDC I am assuming you are proficient at this timing thing (it is tough to do it correctly)

this applies to the 120.980 and 120.981 motor

 

i just purchased a 90 500SL and i am also looking for a repair manual. Mercedes Canada wants 200 $ for the DVD. Is it worth it? i have a few electrical issues with the car such as roof and flickering dash lite. i would like to get at least a copy or the wiring diagrams.