why does my Toyota RAV4 burn so much oil

Solution

1. Preparation

• Gather tools and materials, ensuring the vehicle is parked on a flat surface.
• Disconnect the battery (negative terminal) before starting any work.

2. Inspect and Replace PCV Valve

• Tools Required: Socket set, pliers
• Locate the PCV valve on the engine.
• Remove any hoses connected to the valve using pliers.
• Pull out the old PCV valve and inspect it for blockages or damage.
• Insert the new PCV valve and reconnect hoses.

3. Perform Engine Compression Test

• Tools Required: Compression tester
• Remove the spark plugs using a socket set.
• Install the compression tester into the spark plug holes.
• Crank the engine a few times and record the compression readings.
• Compare readings to manufacturer specifications. If readings are low, further engine repair may be required.

4. Replace Engine Oil and Filter

• Tools Required: Oil filter wrench, socket set, oil catch pan
• Drain the old oil using an oil catch pan by removing the oil drain plug.
• Replace the oil filter with a new one.
• Reinstall the drain plug and refill with new oil of the correct specification.
• Start the engine and check for leaks.

5. Replace Worn Piston Rings (if necessary)

• Tools Required: Full engine gasket set, torque wrench, engine hoist
• Remove the engine from the vehicle.
• Disassemble the engine to access the pistons.
• Replace the piston rings with new ones.
• Reassemble the engine and reinstall it in the vehicle.