Mitsubishi 3000GT Service Manual page 520

ENGINE AND EMISSION CONTROL - Emission Control System
PURGE CONTROL SYSTEM INSPECTION <Turbo - 1992 models>
EVAP
canister
(1) Disconnect the purge air hose from the air intake hose,
and plug the air intake hose. Then, connect the hand
vacuum pump to the purge air hose.
(2) Under the engine conditions shown below, check by apply-
ing vacuum from a hand vacuum pump.
operating
Engine
Applying vacuum
condition
Idling 375 mmHg
(14.8 in.Hg)
3.000 mm
Engine operating
Applying vacuum
condition
Idling
(14.8 in.Hg)
3,000 rpm within Try applying vat- Vacuum leaks
three minutes af- uum
ter starting engine
3,000 rpm after 375 mmHg
three minutes (14.8 in.Hg)
elapsed af-
have
ter starting engine
NOTE
The vacuum will leak continuously if the altitude is 2,200 m (7,200
ft.) or higher, or the intake air temperature is 50°C (122°F) or
higher.
Barometric pressure sensor
Intake air temperature sensor
Engine coolant temperature sensor
Volume flow sensor
air
Engine control module
Result
Vacuum is maintained
Vacuum will be main-
tained momentarily, af-
ter which it will leak*.
1