my Skoda Octavia NFL (2020-Present) exhaust smells like gasoline, what could be wrong?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and set the parking brake.
• Disconnect the battery to avoid any electrical hazards.

2. Fuel Injector Inspection

• Tools Required: Fuel pressure gauge, socket set, safety goggles, gloves.
• Remove the engine cover if applicable.
• Disconnect the fuel injector electrical connectors.
• Use the fuel pressure gauge to check pressure at the fuel rail; it should match specifications (refer to service manual).
• Remove the fuel injectors using the socket set.
• Inspect the injectors for clogs or leaks; clean or replace as necessary.

3. Air-Fuel Mixture Adjustment

• Tools Required: Wideband O2 sensor or scan tool capable of monitoring air-fuel ratio.
• Reconnect the battery.
• Start the engine and monitor the air-fuel ratio using the O2 sensor.
• Adjust the air intake system or replace the air filter if the ratio is too lean or too rich.

4. Exhaust System Inspection

• Tools Required: Visual inspection tools, flashlight.
• Inspect the exhaust system for any visible leaks or damage.
• Repair or replace any damaged components as necessary.

5. Vacuum Leak Check

• Tools Required: Smoke machine or carburetor cleaner.
• Use a smoke machine to check for vacuum leaks around hoses and gaskets.
• If using carburetor cleaner, spray around suspected areas while the engine is running; listen for RPM changes indicating a leak.