Mitsubishi 3000GT Service Manual page 522

ENGINE AND EMISSION CONTROL - Emission Control Svstem
PURGE CONTROL SYSTEM INSPECTION <Turbo - From 1996 models>
To air intake -
hose
Purge c
valve
Throttle body
(4) Connect the vacuum hose (red stripes) removed in (1)
above to P nipple of the throttle body as before.
(5) 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.
(6) Under the engine conditions shown below, check by apply-
ing vacuum from a hand vacuum pump.
When
Engine operating
Applying vacuum
condition
375 mmHg Idling
(14.8 in.Hg.)
Sudden racing
vaporative emission
Engine control
module
(1) Disconnect the vacuum hose (red stripes) from the throttle
body and connect it to a hand 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.
Result
Vacuum is maintained
Vacuum
leaks
Volume air flow sensor
Engine coolant temperature sensor
Intake air temperature sensor
Barometric pressure sensor