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 MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 236 (COOLING SYSTEM)COOLING SYSTEM CAP INSPECTION
2010 Mazda 5 Sport, 2.3 L, Standard
Cooling System Cap Inspection
2010 Mazda 5 Sport, 2.3 L, StandardSECTION Cooling System Cap Inspection
WARNING: This page is about a different car, the 2004 Mazda RX-8. 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 to the first stop. Step back while the pressure escapes.
- When you're sure all the pressure is gone, press down on the cap using the cloth, turn it, and remove it.
- Clean the cooling system cap and the sealed part.
- Inspect the crack or turn over on the sealed part of the cooling system cap.
- If there is malfunction, replace the cooling system cap.
- Attach the cooling system cap to the radiator cap tester.
- Hold the cooling system cap downward and apply pressure gradually. Verify that the pressure holds for 10 s
- If the pressure is not held stable within the specification, replace the cooling system cap.
Pressure
73.3-103.3 kPa {0.748-1.053 kgf/cm 2 , 10.63-14.98 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.