how to fix my Toyota Corolla E170 (2013-2019) engine knocking noise

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

649 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 noise in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, 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.

Symptoms

•Engine knocking or tapping noise, especially at idle or under load
•Decreased engine performance or power loss
•Poor fuel economy
•Check engine light illuminated
•Increased engine vibrations

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related 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 bay, including brackets and mounts.
4
Listen for the location of the knocking noise using a mechanic's stethoscope or a long screwdriver.
5
Perform a compression test to evaluate the health of the engine cylinders.
6
Inspect the timing chain/belt for wear or misalignment.

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
•Mechanic's stethoscope
•Compression tester
•Socket set
•Torque wrench
•Oil filter wrench
•Drain pan

Parts Required

•Engine oil (0W-20 or 5W-20 synthetic)
•Oil filter
•Timing chain/belt kit (if applicable)
•Gaskets or seals (if disassembling engine)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related 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 bay, including brackets and mounts.
4
Listen for the location of the knocking noise using a mechanic's stethoscope or a long screwdriver.
5
Perform a compression test to evaluate the health of the engine cylinders.
6
Inspect the timing chain/belt for wear or misalignment.

Solution

1. Preparation

Gather tools and parts: OBD-II scanner, mechanic's stethoscope, compression tester, socket set, torque wrench, engine oil, oil filter, and possibly a timing chain/belt kit.
Ensure the vehicle is parked on a level surface, and the engine is cool.
Disconnect the battery to prevent any electrical issues during repair.

2. Change Engine Oil and Filter

Tools Required: Socket set, oil filter wrench, drain pan.
Place the drain pan under the oil pan and remove the oil drain plug. Allow the old oil to drain completely.
Remove the old oil filter using the oil filter wrench. Lubricate the rubber O-ring on the new filter with fresh oil and install it.
Reinstall the oil drain plug and torque it to the manufacturer’s specifications (usually around 25-30 ft-lbs).
Fill the engine with new oil through the oil filler cap, using the correct type (typically 0W-20 or 5W-20 synthetic oil) and the right amount (check the owner's manual).

3. Inspect and Repair Timing Components (if necessary)

Tools Required: Socket set, torque wrench, timing tool kit (if applicable).
If the knocking noise persists and points to the timing chain/belt, remove the timing cover by following the manufacturer’s instructions.
Inspect the timing chain/belt for wear, tension, and alignment.
If necessary, replace the timing chain/belt and any associated components (tensioners, guides) according to the service manual specifications.

4. Address Internal Engine Issues (if necessary)

Tools Required: Compression tester, socket set, torque wrench.
If the compression test reveals low readings, further disassembly may be required to inspect pistons, connecting rods, or bearings.
Follow the repair manual to disassemble the engine components as necessary, replacing any worn or damaged parts.
Reassemble using the correct torque specifications for all fasteners to avoid future issues.