my Toyota Corolla E210 (2019-2024) is using too much fuel, what can I do?

Solution

1. Preparation

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

Tools Required:

• OBD-II scanner
• Fuel pressure gauge
• Socket set
• Torque wrench
• Screwdriver set
• Multimeter

2. Replace Air Filter

1. Locate the air filter housing.
2. Remove the screws or clips securing the housing.
3. Take out the old air filter and inspect for dirt and debris.
4. Install the new air filter, ensuring it is seated correctly.
5. Reassemble the housing and tighten screws or clips.

3. Change Spark Plugs

1. Remove the ignition coil or spark plug wires, noting their order for reinstallation.
2. Use a socket wrench to remove the old spark plugs.
3. Inspect the old plugs for signs of wear (e.g., carbon buildup).
4. Install new spark plugs, ensuring they are gapped correctly to manufacturer specifications (typically around 0.044 inches for Corolla).
5. Torque spark plugs to the manufacturer's specifications (usually around 13-15 ft-lbs).

4. Clean Fuel Injectors

1. Disconnect the fuel injector connectors and fuel lines (ensure to relieve fuel pressure first).
2. Remove the fuel injectors from the intake manifold.
3. Use a fuel injector cleaning kit to clean each injector according to the manufacturer's instructions.
4. Reinstall fuel injectors, ensuring proper seating and reconnecting fuel lines securely.

5. Verify Fuel Pressure

1. Connect a fuel pressure gauge to the fuel rail.
2. Turn the ignition to the 'ON' position without starting the engine to check for proper fuel pressure (specification is typically 40-50 psi).
3. If pressure is low, consider replacing the fuel pump or filter.