why is my Genesis G70 gas mileage getting worse suddenly

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal for safety.

2. Inspect Air Filter

• Remove the air filter cover using a socket set.
• Take out the air filter and visually inspect it for dirt and debris.
• If dirty, replace with a new air filter (ensure it matches OEM specifications).

3. Check Fuel System

• Connect a fuel pressure gauge to the fuel rail.
• Turn the ignition to the ON position (do not start the engine) and check the fuel pressure.
• If pressure is below specifications, inspect the fuel pump and fuel filter for failures.
• Replace the fuel filter if it’s due for service or appears clogged.

4. Examine Exhaust System

• Inspect the exhaust system visually for any signs of damage or leaks.
• Use a smoke machine or soap solution to check for leaks in joints or around the catalytic converter.
• Repair any leaks found and replace any damaged components.

5. Tire Maintenance

• Check tire pressure with a tire gauge and inflate to the manufacturer’s recommended levels.
• Inspect tire tread for uneven wear; rotate or replace tires if necessary.