why does my Toyota Corolla E170 (2013-2019) engine make a knocking noise

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

577 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 draining the oil to avoid burns.

Symptoms

•Knocking noise coming from the engine compartment
•Possible loss of power during acceleration
•Engine misfiring or rough running
•Increased engine vibration
•Oil pressure warning light illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored diagnostic trouble codes.
2
Check engine oil level and condition; look for signs of contamination or low levels.
3
Inspect the engine mounts visually for wear or damage that could cause excessive vibration.
4
Listen for the noise while the engine is idling and during acceleration to determine if it changes with RPM.
5
Remove the engine cover to inspect for any loose components or debris.
6
Perform a compression test on each cylinder to assess engine health.

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
•Drain pan

Parts Required

•Engine oil (specification per owner's manual)
•Oil filter
•Engine mounts (if necessary)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored diagnostic trouble codes.
2
Check engine oil level and condition; look for signs of contamination or low levels.
3
Inspect the engine mounts visually for wear or damage that could cause excessive vibration.
4
Listen for the noise while the engine is idling and during acceleration to determine if it changes with RPM.
5
Remove the engine cover to inspect for any loose components or debris.
6
Perform a compression test on each cylinder to assess engine health.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the negative battery terminal to ensure safety while working on the vehicle.

2. Engine Oil Change

Drain the engine oil:
- Place a drain pan under the oil pan.
- Remove the oil drain plug using a socket set and allow the oil to fully drain.
Replace the oil filter:
- Use an oil filter wrench to remove the old oil filter.
- Apply a thin layer of new oil to the rubber gasket of the new oil filter.
- Install the new oil filter by hand until snug, then tighten slightly more.
Refill with new oil:
- Replace the drain plug and torque it to the manufacturer’s specifications.
- Fill the engine with the recommended type and amount of new oil (consult the owner’s manual for specifications).

3. Inspect and Tighten Components

Check and tighten all visible engine components:
- Inspect bolts and fasteners on the engine block, intake manifold, and exhaust system.
- Use a torque wrench to ensure all components are tightened to specified values.
Inspect and replace any damaged engine mounts:
- If mounts are found to be worn, remove the old mounts and install new ones according to the manufacturer's instructions.

4. Address Potential Internal Issues

If knocking persists, consider further disassembly for internal inspection:
- Remove the engine from the vehicle if necessary.
- Inspect internal components such as pistons, connecting rods, and crankshaft for damage.
- Replace any damaged components and reassemble the engine.