why does my Toyota RAV4 XA50 (2019-2024) sound like a diesel engine

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal to ensure safety.

2. Inspect Engine Oil

• Tools Required: Oil wrench, clean rag, oil catch pan.
• Remove the oil dipstick and check the oil level.
• If oil is low or contaminated, change the engine oil and filter:
  • Drain the old oil using the oil catch pan.
  • Replace the oil filter with a new one.
  • Refill the engine with the manufacturer-recommended oil type.

3. Examine Exhaust System

• Tools Required: Jack and jack stands, wrench set.
• Raise the vehicle to access the exhaust system.
• Inspect the exhaust pipes, muffler, and catalytic converter for rust, holes, or loose connections.
• Replace any damaged components to eliminate noise.

4. Check Engine Mounts

• Tools Required: Wrench set, pry bar.
• Visually inspect engine mounts for cracks or wear.
• If damaged, support the engine using a jack, then replace the engine mounts as per manufacturer specifications.

5. Conduct Compression Test

• Tools Required: Compression tester.
• Remove spark plugs and insert the compression tester into each cylinder.
• Crank the engine and record the pressure readings.
• Compare the values to manufacturer specifications; if readings are low, further investigation is needed for potential internal engine issues.