why does my Volkswagen Tiguan First Generation (2007-2018) have high oil consumption?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is on a flat surface and the engine is cool.
• Disconnect the battery to avoid any electrical issues.

2. Inspect and Replace PCV Valve

• Locate the PCV valve on the engine (usually near the intake manifold).
• Disconnect the hose attached to the PCV valve.
• Remove the PCV valve from its housing.
• Inspect the old valve for blockage or damage.
• Install the new PCV valve, securing it firmly in place.
• Reattach the hose ensuring a snug fit.

3. Address Engine Oil Leaks

• Identify and replace any faulty gaskets/seals (e.g., valve cover gasket, oil pan gasket).
• Remove components blocking access if necessary (e.g., intake manifold).
• Clean the mating surfaces of old gasket material, applying a new gasket as needed.
• Torque the bolts to the manufacturer’s specifications.

4. Perform Engine Rebuild (if necessary)

• If compression or leak-down tests indicate severe wear, consider a rebuild.
• Disassemble the engine by removing the cylinder head and inspecting piston rings and cylinder walls.
• Replace worn piston rings and reassemble the engine with new gaskets and seals.
• Ensure all components meet manufacturer specifications.