why does my Toyota Camry XV40 (2007-2011) have poor fuel economy suddenly

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Replace Air Filter

• Remove the air filter cover using a socket set.
• Take out the old air filter and inspect the intake tract for dirt or debris.
• Install a new air filter, ensuring it fits securely, and reattach the cover.

3. Clean Fuel Injectors

• Use a fuel injector cleaning kit or solvent.
• Disconnect the fuel injectors from the fuel rail.
• Follow the kit instructions to clean the injectors thoroughly.
• Reconnect the injectors and ensure they are seated properly.

4. Inspect and Repair Exhaust System

• Raise the vehicle using a jack and secure it with jack stands.
• Visually inspect the exhaust system for leaks or rust.
• If leaks are found, replace the damaged section of piping or the exhaust manifold gasket as needed.
• Ensure all connections are tight and there are no blockages in the catalytic converter.

5. Check Tire Pressure and Condition

• Use a tire pressure gauge to check all tires.
• Inflate tires to the manufacturer’s recommended PSI.
• Inspect tires for uneven wear and replace if necessary.