Well, rotor, cap, and coil seems to have solved the starting problem. I have a significant mis but now that it is running I can go about tracking that down.
I have to say. I checked three spark plugs before I replaced the parts. I saw what I thought was good spark, but evidently not the case. So I have learned that sight it not the appropriate test for spark.
But what is? If you can see spark but don't know if it is strong enough, how do you test for that?

Also, I am in need of part# 1170708732. This is the hard line from the fuel distributor to the WUR. MB tells me it is no longer available. If no one on here has one, possibly someone would know where I could have one made?

Thank you to everyone for their time and information. I appreciate the assistance.

Marc

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1983' SL500 euro