how to fix P0301 misfire code on my Renault Clio V (2019-Present)

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 necessary tools and parts.
• Disconnect the battery to ensure safety while working on the ignition system.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil by unscrewing the retaining bolts and gently lifting it off the spark plug.
• Remove the old spark plug using a spark plug socket.
• Inspect the spark plug port for debris and clean if necessary.
• Install the new spark plug by hand, then torque to manufacturer specifications (typically around 15-20 Nm).
• Reinstall the ignition coil securely.

3. Replace Ignition Coil (if necessary)

• Tools Required: Socket set, torque wrench.
• Disconnect the electrical connector from the ignition coil.
• Unscrew the ignition coil from the cylinder head.
• Install the new ignition coil and torque it to the manufacturer's specifications.
• Reconnect the electrical connector securely.

4. Clean or Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector cleaning kit or replacement injector.
• Remove any necessary components to access the fuel injector (may require removal of the intake manifold).
• Disconnect the fuel line and electrical connector from the injector.
• Remove the injector and check for clogs; clean or replace as needed.
• Reinstall the injector, ensuring proper alignment and sealing.

5. Check Compression (if necessary)

• Tools Required: Compression tester.
• Remove the spark plug and insert the compression tester into the cylinder 1 port.
• Crank the engine and observe the compression reading; compare it to manufacturer specifications.
• If compression is low, further investigation into engine internals may be needed.