fuel problems

[SK180]

ok, ive been working on getting my new 95 motor in my 90 240. almost everything is done now and it will start with some ether but it wont stay running. i know its getting fuel all the way up to the injectors but i dont think the injectors are pulsing like they should. what can i do to get them to pulse?

ps its a 1990 240sx with a 92 harness and ecu and 95 motor and tranny.

[tre]

95 is still external coil correct?

Easiest/messiest way to check is. Pull the rail hold in the fuel injectors and crank the engine

[SK180]

and what if they arent pulsing? and no it was internal coil but i swapped distributors with my old 92 engine.

[SK180]

ok, i know they are pulsing. the lines have pressure though. and the pump is ok. but the rail is dry. could that be the problem?