[djnolan]

the fuel flows in a circular path back to the tank via the FPR and FPD and you are right there to listen to it when the pump starts. And just prop the spark plug up where you can see it through the windshield. The late 944 dme jumper is real easy, just jumper the three large terminals and you have the fuel pump and dme jumpered to the power lead. The dme relay is pretty clearly labled on the later 944s. Not sure about the early cars.

I think doubly and triply about opening up the fuel system. Even if the engine is cold, a spark could ignite spilled fuel. or there is the chance of fuel leaking when the engine is running after reassembly. this could be disastrous in an enclosed garage. Fro safety reasons this is why I favor the test described above first.