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

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

556 words

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 components.
•Allow the engine to cool completely before inspecting or working on it.

Symptoms

•Knocking noise coming from the engine compartment
•Loss of power during acceleration
•Engine misfires or rough idling
•Poor fuel economy
•Check engine light illuminated

Diagnostic Steps

1
Inspect the engine oil level and condition using the dipstick.
2
Scan the vehicle's OBD-II system for any stored error codes.
3
Check for any loose or damaged engine components, such as heat shields or mounts.
4
Perform a visual inspection of the engine's timing chain/belt for wear or misalignment.
5
Listen to the engine with a stethoscope to localize the source of the noise.
6
Perform a compression test on the engine cylinders to assess internal condition.

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
•Compression tester
•Oil catch pan
•Funnel

Parts Required

•Engine oil (manufacturer-recommended type and viscosity)
•Oil filter
•Timing chain/belt (if replacement is necessary)

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Diagnostic Steps

1
Inspect the engine oil level and condition using the dipstick.
2
Scan the vehicle's OBD-II system for any stored error codes.
3
Check for any loose or damaged engine components, such as heat shields or mounts.
4
Perform a visual inspection of the engine's timing chain/belt for wear or misalignment.
5
Listen to the engine with a stethoscope to localize the source of the noise.
6
Perform a compression test on the engine cylinders to assess internal condition.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface, and set the parking brake.
Disconnect the battery to prevent electrical shorts.

2. Engine Oil Check and Replacement

Tools Required: Oil filter wrench, socket set, oil catch pan, funnel.
Inspect engine oil level and condition:
- Remove the dipstick and wipe it clean.
- Reinsert and check the oil level; top off if low.
If oil is dirty or low, replace:
- Drain the old oil using the catch pan.
- Replace with manufacturer-recommended oil type and viscosity.
- Replace the oil filter with a new one.

3. Inspect and Tighten Engine Components

Tools Required: Socket set, torque wrench.
Check for loose components:
- Inspect and tighten any loose bolts on engine mounts and accessories.
- Ensure the heat shield is secure; replace any damaged parts.

4. Timing Chain/Belt Inspection

Tools Required: Torque wrench, socket set.
Inspect the timing chain/belt:
- Remove the timing cover if necessary.
- Check for signs of wear, slack, or misalignment.
- Replace the timing chain/belt if any issues are found, following manufacturer specifications for installation.

5. Compression Test

Tools Required: Compression tester.
Perform a compression test:
- Remove spark plugs and insert the compression tester into each cylinder.
- Crank the engine and record the readings.
- Compare results to manufacturer specifications; replace components as needed based on findings.