EGR System Check

EGR SYSTEM CHECK




1. Disconnect the vacuum hose (green stripe) from the EGR solenoid, and then connect a hand vacuum pump via the three-way terminal.
2. Regarding the engine in cold and hot conditions, check the condition of vacuum when a engine rpm is increase by opening the throttle valve quickly.




When engine is cold
[Engine coolant temperature: 20° C (68° F) or less]




When engine is hot
[Engine coolant temperature: 80° C (176° F) or higher]

3. Disconnect the three-way terminal.
4. Connect the hand vacuum pump directly to the EGR valve.
5. Check whether the engine stalls or if the idle is unstable when a vacuum of 27 kPa (7.9 in.Hg) or higher is applied while idling.