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 MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 185 (COOLING SYSTEM)COOLING SYSTEM CAP INSPECTION
2008 Mazda 6 s Sport, 4D Hatchback, Standard
Cooling System Cap Inspection
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Cooling System Cap Inspection
WARNING: This page is about a different car, the 2004 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
- Never remove the cooling system cap while the engine is running, or when the engine and radiator are hot. Scalding coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system.
- Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise 2.5 turns. Step back while the pressure escapes.
- When you're sure all the pressure is gone, turn the cap using the cloth, and remove it.
- Attach the cooling system cap to a radiator cap tester with the SST . Apply pressure gradually.
- Verify that the pressure becomes held within the specification.
- If the pressure is held for 10 s, the cooling system cap is normal.
Pressure
94-122 kPa
{0.95-1.25 kfg/cm 2 , 13.6-17.7 psi}
RENDER: 1.0x
NO RELATED
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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.