Skoda Octavia NFL (2020-Present) rough idle after oil change, what's the cause

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Wear safety gloves and goggles.

2. Check Oil Level and Condition

• Remove the dipstick and wipe it clean.
• Reinsert the dipstick, remove it again, and check the oil level.
• If the oil is overfilled, drain the excess oil using a wrench to loosen the drain plug.

3. Inspect and Replace Oil Filter

• Locate the oil filter and ensure it's properly seated.
• If it appears damaged or incorrectly installed, remove it using an oil filter wrench.
• Apply a thin layer of new oil on the rubber gasket of the new filter.
• Install the new oil filter by hand until snug, then tighten it slightly more (usually 3/4 turn).

4. Address Potential Air Leaks

• Inspect all vacuum hoses for cracks or disconnections.
• Reconnect or replace any damaged hoses as necessary.
• Ensure the air intake system is secured and free of obstructions.

5. Clear Codes and Test

• Use the OBD-II scanner to clear any fault codes.
• Start the engine and allow it to reach operating temperature.
• Monitor the idle quality and check for any reoccurring codes.