my Skoda Octavia NFL (2020-Present) has a rough start what should I check

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and the engine is cool.
• Disconnect the battery to prevent electrical issues during repairs.

2. Battery Check

• Use a multimeter to measure battery voltage; replace if below 12.4V.
• Clean battery terminals and ensure tight connections.

3. Fuel System Inspection

• Locate the fuel pump relay and test for operation.
• Connect a fuel pressure gauge to the fuel rail and turn the ignition to the ON position (do not start), verifying that pressure is within specifications (typically 50-60 psi).
• Replace the fuel filter if clogged or if fuel pressure is low.

4. Ignition System Repair

• Remove spark plugs using a socket set; inspect for fouling or wear.
• Replace spark plugs with OEM specifications if necessary.
• Test ignition coils with a multimeter; replace any faulty coils.

5. Vacuum Leak Inspection

• Inspect all vacuum hoses for cracks or disconnections.
• Use a smoke machine or carburetor cleaner to identify leaks around the intake manifold.
• Replace any damaged hoses or gaskets.

6. Throttle Body Maintenance

• Remove the throttle body (if necessary) based on manufacturer’s guidelines.
• Clean with throttle body cleaner to remove carbon buildup.
• Reinstall and ensure all connections are secure.