Just a shot in the dark. Check your plug wires end to end with a VOM. They should read 1KOhm when cold. Wait til they are hot and check again. The Spec for the wires is 800 Ohm to 1.3KOhm. I have found that Bosch wires no longer fall into this spec when hot. Mine tested at 1.4KOhm or higher when hot and 1.2KOhm when cold. I went through many sets of end connectors and wires before I got fed up and ordered NGK wires. Which I will add tested at 980Ohms when new. Every other set I had all tested at 1.1-1.2 When new and cold. Beru and Bosch. Next that AFP can be adjusted and should read around .750 if I recall correctly. You loosen the four screws and the one side of it will slide up and down for adjustment. You can also remove it and check for wear.

You could also do the 1/8-1/4 adjustment on the EHA as well to see if that helps at all. Some say it helps some say it does not. I will tell you know that it helped on my M102. By adjusting it I get better off the line performance as well as better high end when floored. You will have to re-adjust your base mixture setting after doing this adjustment. To enrichen mixture you go clockwise and to lean of course is counter clockwise. This makes up for a worn fuel distributor.

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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....