my Toyota Corolla E170 (2013-2019) engine is shaking at idle, what could be wrong

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool if it has been running.

2. Inspect and Replace Engine Mounts (if necessary)

• Tools Required: Socket set, torque wrench, pry bar.
• Sub-steps:
  1. Raise the vehicle using a jack and secure it with jack stands.
  2. Locate the engine mounts; there are typically three or four mounts.
  3. Use a socket set to remove the bolts securing the damaged engine mount.
  4. Carefully lift the engine slightly using a jack to relieve pressure on the mount.
  5. Remove the old mount and install the new mount in the reverse order.
  6. Torque the bolts to the manufacturer's specifications (refer to service manual for exact torque values).

3. Replace Spark Plugs (if fouled)

• Tools Required: Spark plug socket, torque wrench, gap gauge.
• Sub-steps:
  1. Remove the ignition coils or spark plug wires to access the spark plugs.
  2. Use the spark plug socket to carefully remove each spark plug.
  3. Inspect the spark plugs for wear and carbon buildup; replace if necessary.
  4. Set the gap on the new spark plugs according to specifications.
  5. Install the new spark plugs hand-tight, then torque to the specified value.

4. Clean or Replace Air Filter

• Tools Required: None (depending on filter type).
• Sub-steps:
  1. Open the air filter housing by detaching the clips or screws.
  2. Remove the air filter and check for dirt or blockages.
  3. Clean the filter if it's reusable; otherwise, replace it with a new one.
  4. Reassemble the air filter housing securely.

5. Clean Fuel Injectors (if clogged)

• Tools Required: Fuel injector cleaner kit, basic hand tools.
• Sub-steps:
  1. Disconnect the fuel supply line and return line from the fuel rail.
  2. Use the fuel injector cleaner kit to clean the injectors according to the manufacturer's instructions.
  3. Reconnect the fuel lines and check for leaks after cleaning.