Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSNISSAN-DATSUN2001SENTRA SE, STANDARD, RS5F70AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 166 (DISC & DRUM)TESTINGPOWER BRAKE UNITAIR-TIGHT CHECK
2001 Nissan-Datsun Sentra SE, Standard, RS5F70A
Air-Tight Check
2001 Nissan-Datsun Sentra SE, Standard, RS5F70ASECTION Air-Tight Check
WARNING: This page is about a different car, the 2004 Nissan Pathfinder, 2003 Nissan Pathfinder, and 2002 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
- Start engine and let idle for 2 minutes. Shut engine off and depress brake pedal several times. If brake pedal height rises gradually on successive pedal depressions, go to next step. If pedal does not rise on successive pumps, check for air leak.
- Start engine. Depress brake pedal and turn engine off. Hold brake pedal down for 30 seconds. If brake pedal height does not change, brake booster is air tight. If pedal height changes, check for air leak.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.