my Toyota RAV4 is making a loud noise when I start it what’s wrong

Solution

1. Preparation

• Gather tools and parts required.
• Ensure the vehicle is on a flat surface and secure with wheel chocks.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Engine Oil

• Sub-steps:
  1. Remove the oil dipstick and check the oil level.
  2. If oil is low, add the manufacturer-recommended oil type.
  3. If oil is dirty or contaminated, drain the old oil using a wrench to remove the oil pan bolt.
  4. Replace with new oil, ensuring it meets the manufacturer specifications.
• Tools Required: Socket set, oil filter wrench, oil catch pan.
• Safety Warnings: Allow the engine to cool before working on it.

3. Check and Replace Serpentine Belt

• Sub-steps:
  1. Locate the serpentine belt and inspect for cracks or fraying.
  2. Use a wrench to relieve tension on the tensioner pulley and remove the belt.
  3. Install the new serpentine belt following the routing diagram.
• Tools Required: Wrench set, serpentine belt tool.
• Safety Warnings: Ensure the engine is off and cool.

4. Inspect Starter Motor

• Sub-steps:
  1. Remove the starter motor from the engine.
  2. Inspect the drive gear for wear or damage.
  3. If defective, replace the starter motor with a new unit.
  4. Reinstall the starter and reconnect wiring.
• Tools Required: Socket set, torque wrench.
• Safety Warnings: Disconnect the battery before working on electrical components.

5. Check Exhaust Components

• Sub-steps:
  1. Inspect the exhaust manifold and system for loose connections or damage.
  2. Tighten any loose bolts or clamps.
  3. Replace any damaged gaskets or components.
• Tools Required: Socket set, exhaust gasket kit.
• Safety Warnings: Allow exhaust components to cool before handling.