Mitsubishi 3000GT Service Manual page 521

ENGINE AND EMISSION CONTROL - Emission Control System
PURGE CONTROL SYSTEM INSPECTION
<Turbo - From 1993 up to 1995 models>
Purge control
,
V
I
(1) Disconnect the vacuum hos
body and connect it to a hana vacuum pump.
(2) Plug the nipple from which the vacuum hose is discon-
nected.
(3) Under the engine conditions shown below, check by apply-
ing vacuum from a hand vacuum pump.
Engine operating
condition
3,000 rpm
Engine operating
condition
3,000 mm within 1 Try applying
three minutes af- vacuum
ter starting engine
3,000 rpm after 375 mmHg
three minutes
have elapsed af-
ter starting engine
NOTE
The vacuum will leakcontinuously 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 air flow sensor
t
Enginecontrolmodule
e
(red stripes) from the throttle
Applying vacuum
375 mmHg Vacuum is maintained
(14.8 in.Hg)
Applying vacuum
Vacuum will be main-
(14.8 in.Hg) tained momentarily, af-
ter which it will leak*.
Result