Cold Start Valve

Ensure engine coolant temperature is less than 86°F (30°C). Disconnect and ground coil secondary wire at distributor cap. Remove cold start valve from intake manifold with wiring and fuel line connected. Point tip into safe container.
Crank starter for 10 seconds. Valve should emit cone-shaped spray for time duration allowed by ECU. If there is no fuel spray and fuel pressure is present, test system control. See TESTS W/CODES article in the ENGINE PERFORMANCE Section. Dry tip and check for leaks. Acceptable leakage rate of cold start valve is one drip or less per minute.