INTAKE MANIFOLD VACUUM INSPECTION [SKYACTIV-G 2.5T]

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1.  Remove the check valve (intake manifold side) and install the vacuum gauge. (See CHECK VALVE (EMISSION SYSTEM) REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

2.  Verify that the intake air hoses are installed securely.

3.  Warm up the engine.

4.  Measure the intake manifold vacuum while idling (no load) using the vacuum gauge.

•  If not within the specification, perform the following inspections.
?  Compression pressure (See COMPRESSION INSPECTION [SKYACTIV-G 2.5T].)
?  Check valve (INTAKE-AIR SYSTEM) (See CHECK VALVE (INTAKE-AIR SYSTEM) REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
?  Check valve (EMISSION SYSTEM) (See CHECK VALVE (EMISSION SYSTEM) REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
?  Air suction
•  Installation areas of each vacuum hose
•  Installation area of dynamic pressure turbo
•  Installation area of charge air cooler
•  Installation area of throttle body
•  Installation area of fuel injector
•  Installation area of PCV valve
•  Installation area of intake manifold
Standard
Approx. –60.0 kPa {–450.0 mmHg, –17.7 inHg}