how to fix misfire in Renault Clio V (2019-Present) with code P0301

Learn how to diagnose and fix P0301 cylinder 1 misfire in Renault Clio V. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to ensure safety while working on the electrical components.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench, gap gauge.
• Remove the ignition coil by unscrewing the retaining bolts.
• Carefully pull the ignition coil out and set it aside.
• Use a spark plug socket to remove the old spark plug.
• Inspect the new spark plug, ensuring it’s gapped correctly to the manufacturer’s specification (typically between 0.7-0.9 mm for many Renault engines).
• Install the new spark plug and torque it to the manufacturer’s specification (usually around 20 Nm).
• Reinstall the ignition coil, ensuring it is seated properly and secure.

3. Replace Ignition Coil (if necessary)

• Tools Required: Socket set, torque wrench.
• If the ignition coil was found faulty during diagnosis, remove the old coil and replace it with a new one.
• Torque the ignition coil mounting bolts to the specified torque (usually around 10-12 Nm).
• Reconnect the electrical connector to the ignition coil.

4. Inspect and Clean Fuel Injector (if necessary)

• Tools Required: Fuel injector cleaner, appropriate cleaning tools.
• If the fuel injector was found to be malfunctioning, remove it from the engine.
• Clean the injector using a fuel injector cleaning kit or replace it with a new unit as needed.
• Reinstall the cleaned or new injector ensuring it is seated correctly.