Mitsubishi Stealth 1994 Import Service Manual page 399

INTAKE AND EXHAUST - Service Adiustment Procedures
TURBOCHARGER SUPERCHARGING PRESSURE
INSPECTION (Turbo)
Caution
Perform running inspection with two passengers in the
vehicle and where full throttle acceleration can be safely
made.
The pressure gauge reading is taken by a front seat
passenger.
gate solenoid, and connect the pressure gauge to the hose.
Plug the nipple of the solenoid valve from which the hose
(black) has been disconnected.
(2) Drive the vehicle with full throttle and accelerate the engine
to a speed of more than 3,500 rpm at 2nd gear. Measure
the supercharging pressure when the pointer is stabilized.
Standard value: 20 - 60 kPa (2.9 - 8.7 psi)
Caution
If the supercharging pressure deviates from the stan-
dard value, check the following items for possible
causes.
When pressure is high:
Turbocharger waste gate actuator malfunction
When pressure is low:
Turbocharger waste gate actuator malfunction
Supercharging pressure leaks
Faulty turbocharger
INTAKE CHARGE PRESSURE CONTROL SYSTEM
INSPECTION (Turbo)
(1) After the diagnostic trouble code of MFI system is
completely read, turn off the ignition switch.
(2) Disconnect the hose (black) from the turbocharger waste
gate solenoid and connect a three-way joint between the
hose and the solenoid.
(3) Conncet a hand vacuum pump to the three-way joint.
(4) Disconnect the hose (with its end painted red) from the
turbocharger wastegate actuator control boost nipple and
plug the nipple.
(5) Applying a negative pressure with the hand vacuum pump,
check tightness both when the hose end (with its end
painted red) is closed and when it is open.