how to fix P0302 misfire code in Honda Accord 8th Generation (2008-2012)

Solution

1. Preparation

• Gather tools and parts required.
• Disconnect the negative battery terminal to avoid electrical shorts.
• Allow the engine to cool down.

2. Inspect and Replace Spark Plugs

• Remove the engine cover (if applicable).
• Use a socket set to remove the spark plug from cylinder 2.
• Inspect the spark plug for wear or damage; replace if necessary.
• Gap the new spark plug to manufacturer specifications (typically 0.043 inches for Honda).
• Install the new spark plug and torque it to 13 lb-ft (17.5 Nm).

3. Inspect and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder 2.
• Remove the bolt securing the ignition coil and take it out.
• Inspect the coil for cracks or signs of wear; replace if faulty.
• Install the new ignition coil and secure it with the bolt, torquing to manufacturer specifications (typically 7.2 lb-ft or 9.8 Nm).

4. Check and Replace Fuel Injector

• Disconnect the fuel injector connector for cylinder 2.
• Remove the fuel rail bolts and carefully pull the fuel rail away.
• Remove the faulty fuel injector from the rail.
• Install the new fuel injector with new O-rings, ensuring a proper seal.
• Reassemble the fuel rail and reconnect the fuel injector connector.

5. Final Checks

• Reconnect the negative battery terminal.
• Start the engine and check for any signs of misfire or leaks.