Purge Control Valve Inspection - Mitsubishi 1989-1993 GALANT Service Manual

EMISSION CONTROL SYSTEMS -
speed (rpm)
Engine
1 FU446
Evaporative Emission Control System
(2) Start the engine and check to see that, after raising the
engine speed by racing the engine, vacuum remains fairly
constant.
NOTE
If there is no vacuum created, it is possible that the throttle
body port may be clogged and require cleaning.
INSPECTION <SOHC-From i993 models, DOHC Non-
Turbo From 1992 models>
Engine coolant temperature: 85- 95°C (185- 205°F)
(1) Disconnect the vacuum hose from the throttle body purge
hose nipple and connect a hand vacuum pump to the
nipple.
(2) Start the engine and check to see that, after raising the
engine speed by racing the engine, vacuum raises pro-
portionately with the rise in engine speed.
NOTE
If there a problem with the change in vacuum, 'it is
IS
possible that the throttle body port may be clogged and
require cleaning.
PURGE CONTROL VALVE <Turbo>
(1) Remove the purge control valve.
(2) Connect a hand vacuum pump to the vacuum nipple of the
purge control valve.
(3) Apply a vacuum of 400 mmHg (15.7 in.Hg.) and check
(4) Blow in air lightly from the evaporative emission Canister
side nipple and check conditions as follows.
(5) Connect a hand vacuum pump to the positive pressure
nipple of the purge control valve.
(6) Apply a vacuum of 400 mmHg (15.7 in.Hg.) and check
air-tightness.
I