Fuel System Pressure Release
Fuel system pressure release procedure is not available from manufacturer. It may be possible to remove fuel pump relay, start engine, and run engine until fuel pressure drops (engine stalls).
On 325i, 325iC and 325is, the fuel pump relay is located in fuse/relay block on left rear corner of engine compartment. First relay (viewed from left to right) after ground wire is fuel pump relay, followed by Digital Motor Electronics (DME) master relay.