Mitsubishi Eclipse 1990 Service Manual page 823

ENGINE AND EMISSION CONTROL
TSB Revision
Emission Control
Engine
EGR SYSTEM CHECK
1.
the vacuum hose (green stripe
(Turbo)>, white stripe
noid, and then connect a hand vacuum pump via the
three-way terminal.
2.
Regarding the engine in cold and hot conditions, check
the condition of vacuum when a rapid racing has been
performed by opening the throttle valve quickly.
When engine is cold
[Engine coolant temperature:
Throttle valve
Open quickly
When engine is hot
[Engine coolant
Throttle valve
Open quickly
3. Disconnect the three-way terminal.
4. Connect the hand vacuum pump directly to the EGR
valve.
5. Check whether the engine stalls or if the idle is unstable
when a vacuum of 27
while idling.
VACUUM CONTROL VALVE CHECK
Engine>
1. Disconnect the vacuum hose (white stripe) from the vacu-
um control valve and connect the hand vacuum pump
to the vacuum control valve.
2. Put the blind plug to the removed vacuum hose.
3. Start the engine and run at idle.
4. Check the vacuum condition.
Engine condition
Idling
Engine>) from the
Normal vacuum condition
No vacuum will generate
(remained as barometric pressure).
I
or
vacuum condition
It will momentarily
rise over
(3.9
(7.9 or higher is applied
Normal vacuum condition
Approx. 23 (6.7
17300260220
Engine
sole-
or less]
17300270025
I