E30 Fuel line pressure

Hi all,

Does anyone know how much pressure is the fuel pump supposed to generate on the E30's fuel line in to the engine?

Reason for my question: my 318i started missing yesterday and died on the way home and did not want to start again, when I removed the fuel hose going to the engine, it did not even drip out, never mind sprayed out, shouldn't there be pressure in the line even with the car off?

Thanks in advance