Cold Start Injector: Testing and Inspection

Cold Start Components:

1. To test the Cold Start Valve make sure engine coolant temperature is below:

86°F (30°C)

Preferably the engine should sit for several hours or overnight if possible to ensure low engine temperature.
2. Remove the two screws holding the Cold Start Valve to the intake manifold. Without disconnecting the fuel line or the harness connector, remove the Cold Start Valve.
3. Disconnect the coil wire from the center tower of the distributor cap and connect it to ground, using a jumper wire.
4. Wipe dry the nozzle of the Cold Start Valve. Point the valve into a transparent container, and have a helper actuate the starter.

WARNING: Fuel will be expelled. Do not smoke or work near heaters or other fire hazards. Keep a fire extinguisher nearby for easy access.

Cold Start Valve Testing:

5. The valve should spray in an even, cone-shaped pattern until the thermo-time switch interrupts the circuit. An irregular spray pattern indicates a dirty or faulty Cold Start Valve. If the valve does not spray, test the thermo-time switch for proper operation.
6. Wipe the nozzle dry. The valve should not drip for at least a minute. If it does, it is faulty and should be replaced.
7. Reinstall the Cold Start Valve and two mounting screws.