my Cadillac Escalade T1XX (2021-Present) has a strong fuel smell, what could it be?

Symptoms

• Strong fuel odor around the vehicle
• Possible fuel leaks visible under the vehicle
• Check engine light illuminated
• Decreased fuel efficiency
• Engine misfires or rough idling

Diagnostic Steps

1. Inspect the area around the fuel tank for any visible leaks or wet spots.
2. Check under the hood for fuel line integrity and inspect for any cracks or loose connections.
3. Use an OBD-II scanner to check for any stored error codes related to the fuel system.
4. Inspect the fuel cap for proper sealing and signs of damage or wear.
5. Conduct a pressure test on the fuel system to check for leaks.
6. Examine the fuel injectors for signs of leakage or malfunction.

Solution

1. Preparation

• Gather tools and materials needed for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to prevent any electrical shorts.

2. Inspect and Replace Fuel Cap

• Remove the fuel cap and inspect for any cracks or damage.
• If damaged, replace with a new OEM fuel cap.
• Reinstall the fuel cap securely and reconnect the battery.

3. Repair Fuel Line Leaks

• If leaks are found in the fuel lines, use the following steps:
  • 3.1. Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls.
  • 3.2. Disconnect the battery.
  • 3.3. Locate the leaking section of the fuel line.
  • 3.4. Cut out the damaged section (if applicable) and install a new fuel line using appropriate clamps and connectors.
  • 3.5. Reconnect the battery and install the fuel pump fuse.

4. Replace Faulty Injectors

• If fuel injectors are suspected to be leaking:
  • 4.1. Remove the engine cover (if necessary) to access the injectors.
  • 4.2. Disconnect the electrical connectors and fuel lines from the injectors.
  • 4.3. Remove the old injectors using a socket set and replace them with new OEM injectors.
  • 4.4. Reconnect the fuel lines and electrical connectors, ensuring they are secured properly.

5. Conduct a Pressure Test

• After repairs, conduct a pressure test:
  • 5.1. Reconnect the fuel pump fuse and reconnect the battery.
  • 5.2. Turn the ignition to the "On" position without starting the engine to pressurize the system.
  • 5.3. Check for leaks around repaired areas.