my Honda Pilot YF4 (2023-Present) engine hesitates when accelerating, why is that

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the vehicle battery to ensure safety while working on electrical components.
• Allow the engine to cool down if previously running.

2. Inspect and Replace Spark Plugs

• Remove the engine cover (if applicable) using a socket set.
• Use a spark plug socket to carefully remove each spark plug.
• Inspect the spark plugs for wear, carbon buildup, or damage.
• Replace any faulty spark plugs with OEM specifications. Ensure proper gap settings as per manufacturer specifications.
• Reinstall the spark plugs and tighten to the recommended torque value (typically 13-15 lb-ft).

3. Check and Replace Fuel Filter

• Locate the fuel filter in the fuel line (refer to the service manual for exact location).
• Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls.
• Disconnect the fuel lines from the filter using appropriate line removal tools.
• Replace the old fuel filter with a new one, ensuring proper orientation and sealing.
• Reconnect the fuel lines securely and replace the fuel pump fuse.

4. Inspect and Clean MAF Sensor

• Locate the MAF sensor in the air intake duct.
• Disconnect the electrical connector and remove the MAF sensor from its housing.
• Clean the MAF sensor using MAF sensor cleaner spray. Do not touch the sensor elements with your fingers or any tools.
• Reinstall the MAF sensor and reconnect the electrical connector.

5. Test and Adjust Throttle Position Sensor

• Locate the TPS on the throttle body.
• Use a multimeter to test the voltage output of the TPS while manually moving the throttle plate.
• If the voltage readings are outside the specified range, replace the TPS with a new one.
• Reinstall the TPS and ensure it is calibrated according to the manufacturer’s specifications.