Gave my friends 85 230e (m102 engine) a tune up with the following new parts : Bosch ignition rotor and cap, Bosch spark plugs (h8dc0) and four new fuel injectors. Now the car won’t start!

Ran fine before all though a little rough at times.

Plugged one of the old plugs into a wire and got spark when cranking.

Fuel pump is new and operating well.

Car ran fine yesterday. Any ideas ?