210 (Exc. Hatchback) & 310 Man. Trans. Equipped Models
- With engine coolant temperature below 122°F (50°C), start engine and adjust engine speed to approximately 1600 RPM.
- Depress clutch pedal to disengage clutch, then shift transmission through all forward gears while checking ignition timing in each gear.
- The system is functioning correctly if timing is the same in all gears. If timing varies between gears, check for a defective thermal vacuum valve.
- Allow engine to reach normal operating temperature, then again check timing in each gear. System is functioning properly if timing advances when transmission is shifted into high gear. If not, test individual system components to locate cause.