why does my Honda Accord engine make a knocking noise on startup

Solution

1. Preparation

• Gather tools and materials.
• Ensure the vehicle is parked on a level surface and engine is cool.
• Disconnect the negative battery terminal for safety.

2. Change Engine Oil and Filter

• Sub-steps:
  1. Place a drain pan under the oil pan.
  2. Remove the oil drain plug using a socket wrench and allow old oil to drain completely.
  3. Replace the drain plug and tighten to factory specifications (usually around 20 lb-ft).
  4. Remove the old oil filter using an oil filter wrench.
  5. Apply a thin layer of fresh oil to the rubber gasket of the new filter and install it.
  6. Fill the engine with the manufacturer's recommended oil type (usually 5W-20 for Honda Accord).
  7. Start the engine and check for leaks.

3. Inspect and Replace Timing Components (if necessary)

• Tools Required: Timing tool set, torque wrench, socket set.
• Sub-steps:
  1. Remove the engine cover and any components obstructing access to the timing belt/chain.
  2. Use timing tools to align the engine at TDC (Top Dead Center).
  3. Inspect the timing belt/chain for wear or damage.
  4. Replace any worn components (timing belt/chain, tensioners) according to the manufacturer's specifications.
  5. Reassemble components and ensure proper torque specifications are followed.

4. Check Engine Mounts

• Sub-steps:
  1. Visually inspect engine mounts for cracks or wear.
  2. Use a pry bar to check for excessive movement in the mounts.
  3. Replace any damaged mounts with OEM parts.