why is my Toyota Corolla E170 (2013-2019) engine making a knocking sound

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

625 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix engine knocking sound in Toyota Corolla E170 (2013-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow engine to cool before opening the oil drain plug or performing any work in the engine compartment.

Symptoms

•Knocking noise coming from the engine compartment
•Loss of power during acceleration
•Engine misfire or rough idle
•Increased engine vibrations
•Check engine light illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential underlying issues.
2
Inspect the engine oil level and condition; low or dirty oil can cause knocking.
3
Check for any loose or damaged components in the engine compartment.
4
Perform a compression test on the engine cylinders to check for mechanical issues.
5
Listen for the knocking sound while checking the engine mounts and accessory belts for wear.
6
Inspect the timing chain/belt for proper tension and wear.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Oil filter wrench
•Socket set
•Torque wrench
•Drain pan
•Funnel
•Timing tool set
•Pry bar

Parts Required

•Engine oil (0W-20)
•Oil filter
•Timing belt/chain (if applicable)
•Engine mounts (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential underlying issues.
2
Inspect the engine oil level and condition; low or dirty oil can cause knocking.
3
Check for any loose or damaged components in the engine compartment.
4
Perform a compression test on the engine cylinders to check for mechanical issues.
5
Listen for the knocking sound while checking the engine mounts and accessory belts for wear.
6
Inspect the timing chain/belt for proper tension and wear.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a flat surface, and engage the parking brake.

2. Change Engine Oil and Filter

Tools Required: Oil filter wrench, socket set, drain pan, funnel.
Sub-steps:
1. Start the engine for a few minutes to warm up the oil (this helps it drain out easier).
2. Turn off the engine and allow it to cool for a few minutes.
3. Place a drain pan under the oil pan and remove the oil drain plug using a socket wrench (be cautious as the oil might still be warm).
4. Allow the old oil to completely drain.
5. Replace the drain plug and torque it to the manufacturer’s specifications (usually around 25-30 lb-ft).
6. Remove the old oil filter using the oil filter wrench and replace it with a new one, ensuring the rubber gasket is lubed with new oil.
7. Fill the engine with new oil through the oil filler cap using the recommended oil type (usually 0W-20 for this model).
8. Start the engine and check for leaks around the filter and drain plug.

3. Inspect and Replace Timing Components (if needed)

Tools Required: Socket set, torque wrench, timing tool set.
Sub-steps:
1. Remove the engine cover if applicable to access the timing components.
2. Inspect the timing belt/chain for wear, slack, or damage.
3. If replacement is necessary, follow the specific procedure for your engine (this may vary by engine type).
4. Install the new timing belt/chain, ensuring proper alignment and tension according to manufacturer specifications.
5. Reinstall the engine cover.

4. Check Engine Mounts

Tools Required: Socket set, pry bar.
Sub-steps:
1. Inspect the engine mounts for signs of wear or damage.
2. If a mount is damaged, remove it using a socket set.
3. Replace it with a new mount and torque to specifications.