why is there a knocking noise coming from my Toyota Corolla E170 (2013-2019) engine?

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

529 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 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 systems.
•Allow the engine to cool before opening the oil drain plug or working on the engine components.

Symptoms

•Knocking noise from the engine compartment
•Decreased engine performance
•Rough idle or engine vibrations
•Increased engine temperature
•Possible check engine light illumination

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; check for contamination or low levels.
3
Listen for the location of the knocking noise to determine if it’s from the top or bottom of the engine.
4
Check for loose or damaged components such as the exhaust manifold, heat shields, or engine mounts.
5
Perform a compression test on all cylinders to assess engine health.
6
Inspect the timing chain/belt for wear or improper tension.

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
•Socket set
•Oil filter wrench
•Torque wrench
•Oil drain pan

Parts Required

•Engine oil (0W-20 or 5W-20)
•Oil filter
•Gaskets (valve cover, oil pan)
•Connecting rod bearings (if needed)

Related Faults

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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; check for contamination or low levels.
3
Listen for the location of the knocking noise to determine if it’s from the top or bottom of the engine.
4
Check for loose or damaged components such as the exhaust manifold, heat shields, or engine mounts.
5
Perform a compression test on all cylinders to assess engine health.
6
Inspect the timing chain/belt for wear or improper tension.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to ensure safety.

2. Oil Change (if needed)

Sub-steps:
1. Place an oil drain pan under the oil pan.
2. Remove the oil drain plug using a socket wrench and allow the oil to drain completely.
3. Replace the oil filter using an oil filter wrench.
4. Install a new oil filter and tighten it according to specifications.
5. Reinstall the oil drain plug and torque it to the manufacturer's specifications (typically 25-30 ft-lbs).
6. Refill the engine with the recommended oil type (typically 0W-20 or 5W-20) to the proper level.

3. Inspect and Replace Components

Sub-steps:
1. If the knocking noise is from the top, remove the valve cover to inspect the valvetrain components (rocker arms, lifters).
2. If wear is evident, replace worn components as necessary.
3. For knocking from the bottom, remove the oil pan and inspect connecting rods and bearings.
4. Replace any damaged bearings or connecting rods, torque them to the specified values.
5. Reassemble the oil pan and valve cover using new gaskets, ensuring a proper seal without leaks.