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 MANUALSMAZDA20103 L4-2.5LREPAIR AND DIAGNOSISSPECIFICATIONSPRESSURE, VACUUM AND TEMPERATURE SPECIFICATIONSCOMPRESSION CHECK
2010 Mazda 3 L4-2.5L
Compression Check
2010 Mazda 3 L4-2.5LSECTION Compression Check
Compression [L5]
Standard: 1,324 kPa {13.50 kgf/cm2, 192.0 psi} [300 rpm]
Minimum: 927 kPa {9.45 kgf/cm2, 134 psi} [300 rpm]
Maximum difference between cylinders: 196.1 kPa {2.0 kgf/cm2, 28.5 psi}
Standard: 1,324 kPa {13.50 kgf/cm2, 192.0 psi} [300 rpm]
Minimum: 927 kPa {9.45 kgf/cm2, 134 psi} [300 rpm]
Maximum difference between cylinders: 196.1 kPa {2.0 kgf/cm2, 28.5 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.