how to fix a misfire in my Toyota Camry with code P0302

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down if it has been running.

2. Replace Spark Plug and Ignition Coil

• Tools Required: Socket set, torque wrench, spark plug socket, ratchet.
• Remove the ignition coil from cylinder 2 by disconnecting the electrical connector and unbolting it.
• Remove the spark plug from cylinder 2 using a spark plug socket.
• Inspect the old spark plug for signs of wear, fouling, or damage.
• Install a new spark plug (check the gap and adjust if necessary) and torque it to the manufacturer’s specifications (typically around 13 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Check and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, socket set.
• If the fuel injector is suspected to be faulty, remove the fuel rail and disconnect the fuel injector connected to cylinder 2.
• Inspect the old injector for clogs or damage.
• Install a new fuel injector and ensure it is properly seated and connected.

4. Reassemble and Connect Battery

• Reassemble any components that were removed during the repair.
• Reconnect the negative battery terminal.