LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2002 >> Sentra SE-R, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 247 (Disc) >> Testing >> Power Brake Unit >> Airtight Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Airtight Check

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start engine. 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. Stop engine with pedal depressed. If pedal stroke does not change after holding pedal down 30 seconds, brake booster is airtight.
scientia non olet · About LEMON Manuals