my Skoda Octavia NFL (2020-Present) has a strong exhaust smell what to do

Solution

1. Preparation

• Gather tools and parts needed.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Wear appropriate safety gear, including gloves and safety glasses.

2. Address Exhaust Leaks

• Tools Required: Socket set, exhaust sealant, jack stands, safety goggles
• Sub-steps:
  1. Lift the vehicle using a jack and secure it with jack stands.
  2. Inspect the entire exhaust system for leaks, starting from the exhaust manifold to the tailpipe.
  3. If leaks are found, mark the areas.
  4. Remove damaged sections if necessary and replace with new components or use exhaust sealant on small leaks.

3. Check Fuel System

• Tools Required: Fuel pressure gauge, wrench set
• Sub-steps:
  1. Disconnect the fuel pump relay and start the engine to relieve pressure.
  2. Reconnect the fuel pump relay and attach the fuel pressure gauge to the fuel rail.
  3. Start the engine and check the fuel pressure; it should be within manufacturer specifications.
  4. If pressure is too high or too low, replace the fuel pressure regulator or fuel pump as required.

4. Inspect and Replace Catalytic Converter (if necessary)

• Tools Required: Socket set, heat-resistant gloves
• Sub-steps:
  1. Identify if the catalytic converter is clogged by checking for exhaust flow.
  2. If restricted, remove the catalytic converter by unbolting it from the exhaust system.
  3. Install a new catalytic converter ensuring proper alignment and bolting to the correct torque specifications.

5. Engine Tune-Up

• Tools Required: Spark plug socket, torque wrench
• Sub-steps:
  1. Replace spark plugs and ignition coils if misfiring is detected.
  2. Recheck the air filter and replace if dirty to ensure proper air intake.
  3. Verify that the engine's air-fuel mixture is within specifications; adjust as necessary with an engine tuning software.