how to fix P0301 misfire code in 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 tools and parts needed for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before starting work.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil:
  1. Disconnect the ignition coil connector.
  2. Remove bolts securing the coil, then gently pull it out.
• Replace the spark plug:
  1. Using the spark plug socket, remove the old spark plug.
  2. Check the gap on the new spark plug (should be according to manufacturer specifications).
  3. Install the new spark plug and torque it to the manufacturer's specifications (usually around 15-20 Nm).
• Reinstall the ignition coil:
  1. Position the coil over the spark plug and secure it with bolts.
  2. Reconnect the ignition coil connector.

3. Replace Ignition Coil (if necessary)

• Tools Required: Socket set, torque wrench.
• Remove the faulty ignition coil (as described in the previous step).
• Install the new ignition coil:
  1. Secure the coil with bolts and torque to specifications.
  2. Reconnect the ignition coil connector.

4. Check Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, multimeter.
• Remove the fuel injector for cylinder 1:
  1. Disconnect the fuel injector connector.
  2. Remove any retaining clips and gently pull the injector out.
• Test the injector:
  1. Use a multimeter to check the resistance (should match specifications).
  2. If faulty, replace with a new injector, ensuring proper sealing during installation.

5. Perform a Compression Test (if necessary)

• Tools Required: Compression tester.
• Insert the compression tester into the spark plug hole of cylinder 1.
• Crank the engine and record the compression reading.
• Compare with manufacturer specifications to determine if there are internal engine issues.