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 25 (ENGINE CONTROLS - SYSTEM & COMPONENT TESTING)VARIABLE VALVE TIMING SYSTEMVARIABLE VALVE TIMING ACTUATOREXTREME SPARK RETARD POSITION
2010 Mazda 5 Sport, 2.3 L, Standard
Extreme Spark Retard Position
2010 Mazda 5 Sport, 2.3 L, StandardSECTION Extreme Spark Retard Position
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 Mazda Protege5, 2002 Mazda Protege, 2002 Mazda Millenia, 2002 Mazda MX-5 Miata, and 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect negative battery cable.
- Remove Variable Valve Timing (VVT) actuator.CAUTION: If engine oil gets on parts, they may not function properly. When removing VVT actuator, be sure to cover other parts with a cloth to protect them from oil.
- Ensure camshaft dowel pin hole on VVT actuator is aligned with top of third tooth, by counting back 3 teeth to sprocket gap which is aligned with alignment mark. See Fig 1 . If not as specified, stopper pin in VVT actuator is not engaged at position of maximum valve timing retard. Replace VVT actuator.
- Install VVT actuator.
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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.