what could cause my Toyota Tacoma N300 (2016-Present) to misfire

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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery to prevent electrical shorts.
• Ensure the vehicle is on a flat surface and secured with wheel chocks.

2. Replace Spark Plugs

• Remove the engine cover if equipped.
• Using a socket set, unscrew and remove the spark plugs.
• Inspect the old spark plugs for wear and replace with OEM or equivalent spark plugs.
• Torque the new spark plugs to the manufacturer's specification (typically around 13 lb-ft).

3. Inspect and Replace Ignition Coils

• Remove the ignition coil connectors.
• Unscrew the ignition coils and carefully pull them from the spark plug wells.
• Inspect for cracks or damage, then replace any faulty coils with new ones, ensuring they are seated properly.
• Reconnect the ignition coil connectors.

4. Clean or Replace Fuel Injectors

• If injectors are clogged, use a fuel injector cleaning kit, or replace them if necessary.
• To clean, follow the kit instructions to ensure proper cleaning.
• For replacement, disconnect the fuel lines and electrical connectors, then remove the old injectors and install new ones.

5. Inspect Vacuum Lines

• Visually inspect all vacuum lines for cracks or disconnections.
• Replace any damaged vacuum lines to ensure proper air intake.

6. Test Fuel Pressure

• Connect a fuel pressure gauge to the fuel rail.
• Turn the ignition to the ON position (do not start) and check for adequate fuel pressure (refer to service manual for specs).
• If pressure is low, inspect the fuel pump and filter for issues.