Rogue 2WD L4-2.5L (QR25DE) (2008)
Vacuum Brake Booster Check Valve: Service and Repair
Check Valve Airtightness
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Use a handy vacuum pump (A) to check.
When connected to the brake booster side (B):
Vacuum should decrease within 1.3 kPa (10 mmHg, 0.39 inHg) for 15 seconds under a vacuum of -66.7 kPa (-500 mmHg, -19.70 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.