my Skoda Octavia's exhaust smells bad what could be the cause

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, inspection mirror.
• Ensure the vehicle is parked on a level surface and the engine is off. Allow the engine to cool before proceeding.

2. Address Exhaust Leaks

• Step 1: Inspect the exhaust system visually for any cracks or holes.
• Step 2: If a leak is found, remove the damaged section using a socket set.
• Step 3: Replace with a new exhaust section and secure it using the correct torque specifications.

3. Replace Spark Plugs

• Step 1: Remove the ignition coil using a socket set.
• Step 2: Extract the old spark plugs using a spark plug socket.
• Step 3: Check the gap on new spark plugs, adjust if necessary.
• Step 4: Install the new spark plugs, ensuring they are torqued to manufacturer specifications.

4. Check Fuel System

• Step 1: Inspect the fuel injectors for leaks or clogs, clean or replace as necessary.
• Step 2: If fuel pressure is low, replace the fuel filter and check the fuel pump operation.

5. Clean Air Intake

• Step 1: Remove the air filter and inspect for dirt or clogs.
• Step 2: Replace the air filter if dirty.
• Step 3: Check the intake manifold for any blockages and clean if necessary.