why does my Toyota RAV4 XA40 (2013-2018) have excessive oil consumption

Solution

1. Preparation

• Gather tools and materials needed for the repair.
• Ensure the vehicle is on a level surface and safely secured.
• Disconnect the negative battery terminal to prevent electrical issues.

2. Addressing Oil Consumption Causes

A. Replace Piston Rings (if compression test indicates wear)

1. Remove Engine Components

   • Remove the intake manifold and exhaust manifold.
   • Detach the cylinder head by removing bolts in a specific sequence.
   • Lift off the cylinder head carefully.

2. Replace Piston Rings

   • Remove the pistons from the engine block.
   • Replace the old piston rings with new ones of the specified type (ensure proper sizing).
   • Reinstall pistons, ensuring they are placed in the correct orientation.

3. Reassemble Engine

   • Reinstall the cylinder head with a new gasket. Torque bolts to manufacturer specifications.
   • Reattach the intake and exhaust manifolds securely.

B. Check and Replace PCV Valve (if malfunctioning)

1. Locate the PCV valve and disconnect the hose.
2. Remove the PCV valve from its housing.
3. Install a new PCV valve and reconnect the hose securely.

3. Final Checks

• Refill engine oil to the recommended level using the appropriate oil type.
• Reconnect the negative battery terminal.