Car is a 1986 190E 2.0.

I'm trying to diagnose this over the phone - not easy!

Car was running fine. Died, and won't restart.

Fuel pump primes when ignition is turned on,

Engine has spark.

I'm thinking fuel pump relay so far - I was thinking crank position sensor, but the spark is still there which made me rule that one out.

Anybody else have any ideas?