[17] ENGINE AND EMISSION CONTROL - - EMISSION CONTROL <MPI> - EXHAUST GAS RECIRCULATION (EGR) SYSTEM - EGR SYSTEM CHECK <4G63, 4G64> | PRINT PAGE / INDEX / PRIOR / NEXT

| EGR SYSTEM CHECK <4G63, 4G64>
| Disconnect the vacuum hose (Green stripe) from the EGR valve, and then connect a hand vacuum pump via the three-way terminal. When the engine is hot or cold, check the condition of vacuum by racing the engine.
When engine is cold
(Engine coolant temperature: 20°C or less)
Throttle valve | Normal vacuum condition
--- | ---
Open quickly | No vacuum will generate (the same as barometric pressure.)
When engine is hot
(Engine coolant temperature: 80°C or higher)
Throttle valve | Normal vacuum condition
--- | ---
Open quickly | It will momentarily rise over 13 kPa
Disconnect the three-way terminal.
| Connect the hand vacuum pump to the EGR valve nipple. Check whether the engine stalls or the idling is unstable when a vacuum of 30 kPa or higher is applied during idling.

[17] ENGINE AND EMISSION CONTROL - - EMISSION CONTROL <MPI> - EXHAUST GAS RECIRCULATION (EGR) SYSTEM - EGR SYSTEM CHECK <4G63, 4G64> | PRINT PAGE / INDEX / PRIOR / NEXT

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