Montero (M/T), Raider (M/T) & All Other California Models (Ported EGR Valve)

Connect a vacuum tee into Green-striped hose from EGR valve and connect a vacuum pump to vacuum tee. With engine temperature 68°F (20°C) or less and engine idling, snap throttle opened and closed. If no change in vacuum reading on vacuum pump gauge is detected, system is functioning properly.
With engine temperature 158°F (70°C) or higher and engine idling, snap throttle open to race engine. If vacuum is now indicated on vacuum pump gauge, system is functioning properly.

Using a vacuum pump, apply specified vacuum to open EGR valve. See appropriate EGR VALVE SPECIFICATIONS table. If idle becomes unstable or engine stalls, EGR system is functioning properly.

EGR VALVE SPECIFICATIONS (1989 Models)

Application	Closed In. Hg	Open In. Hg
Colt, Colt Wagon, Mirage	1.8	7.7
Colt Vista	2.1	6.8
Galant, Sigma	1.7	7.5
Montero, Raider, Van/Wagon	1.9	6.7

EGR VALVE SPECIFICATIONS (1990 Models)

Application	Closed In. Hg	Open In. Hg
Colt, Colt 200, Mirage & Colt Wagon	1.8	7.7
Colt Vista	2.1	6.8
Eclipse	1.8	8.5
Galant	1.7	7.5
Pickup, Ram-50	1.2	9.4
Precis	1.0	3.3
Sigma	1.6	8.7
Van/Wagon	1.9	6.7

EGR VALVE SPECIFICATIONS (1991 Models)

Application	Closed In. Hg	Open In. Hg
Colt, Colt 200, Colt Vista, Mirage & Summit	2.1	6.8
Eclipse	1.8	8.5
Galant	1.7	7.5
Montero	2.4	6.7
Pickup, Ram-50	1.2	9.4
Precis	1.0	3.3
Stealth & 3000GT	1.8	9.1

EGR VALVE SPECIFICATIONS (1992-94 Models)

Application	Closed In. Hg	Open In. Hg
Colt, Colt 200, Mirage & Summit	2.1	6.8
Diamante, Stealth & 3000GT	1.8	9.1
Eclipse	1.8	8.5
Expo, Summit Wagon & Vista Wagon	1.6	7.9
Galant	1.7	7.5
Montero	2.4	6.7
Pickup, Ram-50	1.2	9.4
Precis	1.0	3.3