I have consulted the book again and it says to test the starting valve for proper operation and for leaks.

to test for proper operation of starting valve:
1.disconnect fuel line from starting valve.
2. remove valve and then reconnect fuel line.
3. place the valve in a container.
4. it then says to simulate 10kOhm resistance at the coolant temp. sensor, using some sort of resistance substitution unit.
5. disconnect green wire on electronic ignition control unit.
6. crank engine while observing the valve eject fuel.

test the valve for leaks:
make sure the valve is dry, and that it is not dripping/leaking .
the book does not mention whether or not the car should be on or not, nor does it say anything about simulating a resistance at the coolant temperature sensor, which i would guess should probably be at around 250/Ohms =90C simulating an engine at normal operating temp. i guess that you should just make sure that the cold start valve isnt delivering fuel at normal operating temp. while it is out of the intake manifold.

good luck