[john walker's workshop]

the WUR just allows the fuel distributor to run the engine richer. it doesn't by itself add any fuel. it needs no voltage to allow a cold start. the voltage just warms it up so it increases control pressure and leans the system out over about 3 minutes. a good state of tune and a fast cranking speed make starting easier. year of the car would be helpful. the cold start injector is probably what you're thinking of.