very common M103 problem..

chances are (from cheap to expensive)

- fuel pump check valve (~$15 at partsshop)
- over voltage protection -ovp- relay (less likely in this matter)
- fuel accumulator (next to fuel pump, ~$120)
- fuel pressure regulator (under air cleaner next to fuel distributor, >$200)

many people just give up and crank more than once when the engine is warm. in my case, i replaced the check valve and fuel accumulator, no help. considering my ovp is in good shape (no hot start problems), only item left is the fpr which costs arm&leg at the MB dealer.

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2001 E200 Kompressor Avantgarde
1987 300E 5-speed
1976 450SLC
1975 280S (sold)
1973 230.6 (sold)