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Home >> Nissan-Datsun >> 2002 >> Sentra SE-R, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Disc) >> Testing >> Power Brake Unit >> Airtight Check
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Airtight Check

WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start engine, and stop it after 1-2 minutes. Slowly depress brake pedal several times. If pedal goes farther down first time and gradually rises after second or third time, booster is airtight.
  2. Depress brake pedal while engine is running, and stop engine with pedal depressed. If pedal stroke does not change after holding pedal down 30 seconds, brake booster is airtight.
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