Figure 6.13. Check the vacuum on a cold and warm engine, creating a high load with a rapid opening of the throttle valve
2. Check the vacuum on a cold and warm engine, creating a high load with a fast opening of the throttle valve.
Engine cold (coolant temperature: 20°C or below):
| Throttle valve | Normal condition |
| Quick open | No vacuum is created (equal to atmospheric air pressure) |
Engine warm (coolant temperature 80°C or higher):
| Throttle valve | Normal condition |
| Quick open | Short-term increase greater than 13 kPa |
3. Disconnect the adapter.
4. Connect a hand vacuum pump to the EGR valve (Figure 6.14).
Figure 6.14. Check if the engine stalls and the idle speed does not "float" if a vacuum of at least 30 kPa is created at idle
[The material is based on data from the website: mitsubishiman.ru]
5. Check whether the engine stalls or the idle speed "floats" if a vacuum of at least 30 kPa is created at idle.