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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 407 (CONVENTIONAL BRAKE SYSTEM)POWER BRAKE UNIT INSPECTIONPOWER BRAKE UNIT FUNCTION CHECK (INSPECTION USING THE TESTERS)CHECKING FOR VACUUM LOSS (UNLOADED CONDITION)
2008 Mazda 6 s Sport, 4D Hatchback, Standard
Checking for vacuum loss (unloaded condition)
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Checking for vacuum loss (unloaded condition)
WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
- Stop the engine when the vacuum gauge reading reaches 66.7 kPa {500 mmHg, 19.7 inHg}. Start the engine.
- Observe the vacuum gauge for 15 seconds.
- If the gauge shows 63.3-66.7 kPa {475-500 mmHg, 18.7-19.6 inHg} , the unit is operating.
- If not, inspect for damage on the check valve or vacuum hose, and examine the installation. Repair if necessary, and inspect it again.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.