3.1.5-4
M201 2014.01
3.1.5-4Air Intake System
General Inspection
General Equipment
CAUTION: The components of engine are
at high temperature when the engine is
running. Pay attention to the components
at high temperature during removal.
Otherwise, serious scalding will be
caused.
Vacuum Degree of Air Intake
System Inspection
1. Stop the engine and turn off the ignition
switch.
2. Detach the brake booster vacuum hose from
the intake manifold.
3. Connect 3-way connector, hose and special
tool (vacuum gauge and connector) between
intake manifold and vacuum hose detached.
4. Start the engine and measure the vacuum
degree of air intake system under engine
idling.
Standard value: 330 ± 20 kPa
5. Remove the vacuum gauge and reconnect
the vacuum hose.
6. If an observed or reported problem is obvious
and its cause has been found, solve the fault
before proceeding to the next step.
7. If the cause is not visually evident, verify the
symptom by referring to the Symptom Chart.
Vacuum gauge
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