Well, that's a start. That means its probably an M110 engine, check your VIN and see. The engine number will start with either 110.987 or 110.989

Don't know what the difference is but I do know there are a number of fuel injection systems used with that engine, find out which one you have and do a search. Plenty of information in this forum if you can be a bit more specific.

good luck

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1987 300e manual 250,000 km (sold)