how do I fix a misfire on my Toyota Tacoma N300 (2016-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface, and the ignition is off.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plugs

• Tools Required: Socket set, spark plug socket, torque wrench
• Remove the engine cover if applicable.
• Using the spark plug socket, carefully remove each spark plug.
• Inspect the spark plug condition; look for signs of wear, carbon build-up, or damage.
• Replace with new spark plugs, ensuring they are gapped according to manufacturer specifications (typically around 0.044 inches).
• Torque the new plugs to the manufacturer-recommended spec (usually around 13 ft-lbs).

3. Test and Replace Ignition Coils

• Tools Required: Multimeter, socket set
• Disconnect the electrical connectors from the ignition coils.
• Use a multimeter to test the resistance of each coil; refer to the service manual for acceptable resistance values.
• If any coil is out of spec, replace it with a new one.
• Reconnect the electrical connectors after replacement.

4. Inspect and Clean Fuel Injectors

• Tools Required: Fuel injector cleaning kit (optional), basic hand tools
• If injectors are suspected of being clogged, remove them from the fuel rail.
• Clean or replace them as necessary.
• Reinstall the cleaned or new injectors, ensuring proper O-ring seating.

5. Check for Vacuum Leaks

• Tools Required: Smoke machine or soapy water
• Inspect all vacuum hoses visually for cracks or signs of wear.
• Use a smoke machine or spray soapy water on the hoses while the engine is running to detect leaks.
• Replace any damaged hoses as needed.