why is my Skoda Octavia’s coolant boiling over

Solution

1. Preparation

• Gather tools and parts required for repair.
• Ensure the engine is cool before working on the cooling system.
• Disconnect the battery for safety.

2. Replace the Radiator Cap

• Sub-steps:
  1. Remove the old radiator cap by turning it counterclockwise.
  2. Inspect the rubber seal for any damage or wear.
  3. Install the new radiator cap by pressing down and turning clockwise until secure.
• Tools Required: None specific, just your hands.

3. Replace the Thermostat (if faulty)

• Sub-steps:
  1. Drain the coolant from the radiator into a suitable container.
  2. Remove the thermostat housing bolts using a socket set.
  3. Take off the thermostat housing and remove the old thermostat.
  4. Clean the mating surfaces of the housing and engine block.
  5. Install the new thermostat and gasket, ensuring proper alignment.
  6. Reattach the thermostat housing and torque the bolts to manufacturer specifications (usually around 15-20 Nm).
• Tools Required: Socket set, torque wrench, gasket scraper.

4. Repair or Replace Leaking Hoses

• Sub-steps:
  1. Identify any damaged or leaking hoses.
  2. Loosen the hose clamps and remove the faulty hose.
  3. Install the new hose and secure it with clamps.
• Tools Required: Screwdriver or pliers (for hose clamps).

5. Refill Coolant System

• Sub-steps:
  1. Refill the radiator with the appropriate coolant mixture (50/50 coolant and distilled water).
  2. Start the engine and let it reach operating temperature while monitoring the coolant level.
  3. Add coolant as necessary and bleed any air from the system as per manufacturer's instructions.
• Tools Required: Funnel.