G37 Coupe V6-3.7L (VQ37VHR) (2008)
Appearance
Check for correct assembly, damage and deterioration.
Check Valve Airtightness
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Use a handy vacuum pump (A) to check.
When connected to the booster side (B): Vacuum should decrease within 1.3 kPa (9.8 mmHg, 0.38 inHg) for 15 seconds under a vacuum of
66.7 kPa (-500 mmHg, -19.69 inHg).
When connected to the engine side (C): Vacuum should not exist.
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Replace vacuum hose assembly if vacuum hose and check valve are malfunctioning.