my Skoda Octavia won't start but the lights work, what's wrong?

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, fuel pressure gauge, socket set.
• Disconnect the negative battery terminal to prevent any electrical shorts during the repair process.

2. Battery Check

• Sub-steps:
  1. Inspect the battery terminals for corrosion; clean if necessary using a wire brush.
  2. Tighten the battery connections to ensure a secure fit.
  3. Test the battery voltage with a multimeter; replace if voltage is below 12.4 volts.

3. Fuel System Inspection

• Sub-steps:
  1. Turn the ignition on (without starting) and listen for the fuel pump running for a few seconds.
  2. If the fuel pump does not activate, check the fuel pump fuse and relay.
  3. Connect a fuel pressure gauge to the fuel rail and turn the ignition to the "on" position; check for proper pressure (typically around 40-60 psi depending on model).

4. Ignition System Check

• Sub-steps:
  1. Remove one spark plug and inspect it for wear or fouling; replace if necessary.
  2. Reconnect the spark plug wire to the plug and ground it against the engine block.
  3. Have someone crank the engine while observing for spark; if there is no spark, replace the ignition coil.

5. Reassembly and Testing

• Sub-steps:
  1. Reconnect all components that were removed or inspected.
  2. Reconnect the negative battery terminal.
  3. Attempt to start the vehicle; monitor for any unusual sounds or behaviors.