why does my Toyota Tacoma N300 (2016-Present) feel like it's misfiring

Learn how to diagnose and fix engine misfire issues in Toyota Tacoma N300 (2016-Present). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to ensure safety while working on electrical components.

2. Replace Spark Plugs

1. Remove the engine cover, if applicable, to access the spark plugs.
2. Using a socket set, remove the spark plug wires or ignition coil packs.
3. Remove the spark plugs with a spark plug socket and inspect them for wear or damage.
4. Install new spark plugs, ensuring they are torqued to the manufacturer’s specified torque (typically around 13-15 ft-lbs).
5. Reattach the ignition coil packs or spark plug wires.

3. Inspect and Replace Ignition Coils (if necessary)

1. If the ignition coils are faulty, remove them by unbolting and disconnecting the electrical connectors.
2. Install new ignition coils, ensuring they are seated properly and reconnecting the electrical connectors securely.
3. Torque the bolts to the specified value (typically around 8-10 ft-lbs).

4. Fuel System Inspection

1. Connect a fuel pressure gauge to the fuel rail to check for adequate fuel pressure.
2. If pressure is low, inspect the fuel pump and fuel filter for blockages or failures.
3. Replace the fuel filter if clogged and consider replacing the fuel pump if it fails to deliver proper pressure.

5. Check for Vacuum Leaks

1. Inspect all vacuum hoses for cracks, tears, or disconnections.
2. Use a smoke machine or carburetor cleaner to identify leaks around the intake manifold.
3. Replace any damaged hoses and reseal the manifold if necessary.