Glow Plugs

Glow plugs are used during cold starts to preheat swirl chambers. The system is switched on when the key switch is turned to position "II". Preheating time depends on a coolant temperature switch connected to time circuit in the glow plug relay. Glow plugs remain on approximately 0-14 seconds on turbo models and 10-25 seconds on non-turbo models after the indicator lamp has gone out. Glow plugs will operate when coolant temperature is above 122°F (50°C).

Glow plugs operate when starter motor is rotating (key position "III") and cut when engine starts and start key is released back to position "II". To repeat starting attempt, key switch must first be returned to position "I". Automatic cold starting devices are also incorporated into the injection pump to assist starting by advancing injection timing.