why is my Toyota Highlander XU70 (2020-Present) using too much fuel

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace Air Filter

• Locate the air filter housing.
• Remove the screws or clips securing the air filter cover.
• Take out the air filter and inspect it for dirt and blockages.
• If dirty, replace it with a new air filter, ensuring the correct orientation.

3. Check and Adjust Tire Pressure

• Use a tire pressure gauge to measure the pressure in each tire.
• Inflate or deflate tires to match the specifications found on the driver’s door jamb label.
• Ensure the spare tire is also checked.

4. Clean or Replace Fuel Injectors

• If using a cleaning solution, disconnect the fuel lines and add the cleaner to the fuel system as per the manufacturer's instructions.
• If injectors are clogged and cannot be cleaned, remove them using a socket set and replace them with new injectors, ensuring proper torque specifications are followed.

5. Inspect and Replace Spark Plugs

• Remove the ignition coil packs using a socket wrench.
• Extract the spark plugs using a spark plug socket.
• Inspect the spark plugs for wear; replace them with new ones if necessary, torquing to manufacturer specifications (usually around 13-15 lb-ft).