200 Quattro Wagon L5-2226cc 2.22L SOHC Turbo (MC) (1989)
Cold Start Injector: Description and Operation
Cold Start Injector
The cold start valve, located on the intake manifold, is used to provide fuel enrichment for easy starting, even at very low ambient temperatures. The
valve is ECU controlled and operates for varying periods of time, depending upon the signal from the coolant temperature sensor. Fuel is supplied to the
valve at system pressure from a port on the fuel distributor. At very low temperatures, the valve provides additional fuel for as long as 10 seconds after
initial cranking begins. At warmer temperatures, the duration is reduced.