EM-30
ENGINE MECHANICAL
-
Intake Venturi System
(LN
2L-T only)
INTAKE VENTURI SYSTEM
(LN 2L-T
only)
ON-VEHICLE INSPECTION
NOTICE: Always stop the engine when installing or re-
moving the vacuum gauges,
or
removing the vacuum hoses.
(Austria)
PREPARATION
Using two 3-way connectors, connect two vacuum gauges
to hoses between the actuator and VSV.
CHECK THROTTLE VALVE (LOW ALTITUDE AREA)
HINT: Perform this check
at
an altitude below 800 m
(2,600 ft) and
at
an atmospheric pressure above 700
mm Hg
(94.5
kg/cm2).
Start the engine and check that vacuum operates on
diaphragm chamber
B
so that the rods are pulled up.
Check that when the accelerator pedal
is
depressed,
atmospheric air operates on both diaphragm cham-
bers so that the rods return.
Check that when the starter switch
is
turned OFF
(engine stopped) from idling condition, vacuum
operates on both diaphragm chambers so that the
rods are pulled up.
Check that after the starter switch
is
turned OFF, the
rods gradually return.
CHECK THROTTLE VALVE (HIGH ALTITUDE AREA)
HINT: Perform this check
at
an altitude above 800 m
(2,600 ft) and
at
an atmospheric pressure below 690
mm
Hg
(93.2 kg/cm2).
Check that during idling or with the starter switch OFF
(engine stopped), vacuum
is
not operating on either
diaphragm chamber.
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