1989 Mercedes Benz 400sel engine starting

There is a fuse in a small fuse box under hood with a relay and a single fuse in it, I bet its blown. I had the same problem on the same vehicle and I found this fuse blown from a previous post on 2 carpros and sure enough it fixed it. I dont remember what the fuse was but I think it was a cold start fuel injector. Hope this helps. It was in the center area of firewall up top, just look real close at all boxes with covers on then, this one willhave a relay in it and this one fuse. Good luck