1977-79 Models
- Disconnect fuel line and remove cold start valve. Loosen fuel line on fuel distributor and turn so that cold start valve can later be reconnected. Point cold start valve down into fuel container. Disconnect safety switch plug.
- Turn ignition on. Connect jumper wires from cold start valve to battery terminals. Valve should spray a cone-shaped pattern of fuel. Disconnect jumper wires from valve.
- Using clean cloth, wipe excess fuel from tip of valve. No fuel should leak out of nozzle. Turn ignition off. Install cold start valve using new gasket. Reconnect safety switch plug and cold start valve plug.
- Thermo-time switch activates cold start valve at temperatures below 59°F (15°C). Actuating period increases with decreasing temperatures to a maximum of 12 seconds at -4°F (-20°C).
- At coolant temperatures below 59°F (15°C), connect voltmeter to cold start valve harness connector and engage starter. Voltmeter should indicate 10 volts for amount of time that thermo-time switch is closed.
- At coolant temperatures above 59°F (15°C), switch can be checked with an ohmmeter. Disconnect thermo-time switch plug. Connect test lead to terminal marked "W" in plug (Brown/Black wire) and other lead to ground. See Fig 1.
- Ohmmeter reading should be about 270 ohms. If correct, connect test lead to "G" terminal in plug. Ohmmeter should read about 62 ohms. If ohmmeter readings are incorrect, replace thermo-time switch.
Courtesy of NOT AVAILABLE