why does my Toyota Corolla E170 (2013-2019) engine knock when I accelerate?

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

590 words

Problem Statement

Learn how to diagnose and fix engine knocking 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 systems.
•Allow the engine to cool before opening the oil drain plug.

Symptoms

•Knocking or pinging noise during acceleration
•Reduced engine performance or power
•Poor fuel economy
•Engine misfires or rough running
•Possible check engine light illumination

Diagnostic Steps

1
Scan the vehicle's onboard diagnostics system using an OBD-II scanner to check for error codes.
2
Inspect the engine oil level and condition; low or dirty oil can cause knocking.
3
Check the fuel quality to ensure it meets the manufacturer's specifications; low-quality fuel can lead to knocking.
4
Examine the spark plugs and ignition system for wear or misfire issues.
5
Inspect the engine's timing system for proper alignment and function.
6
Perform a compression test on the engine cylinders to assess internal 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
•Compression tester

Parts Required

•Engine oil (correct viscosity)
•Oil filter
•Spark plugs
•Fuel system cleaner

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Diagnostic Steps

1
Scan the vehicle's onboard diagnostics system using an OBD-II scanner to check for error codes.
2
Inspect the engine oil level and condition; low or dirty oil can cause knocking.
3
Check the fuel quality to ensure it meets the manufacturer's specifications; low-quality fuel can lead to knocking.
4
Examine the spark plugs and ignition system for wear or misfire issues.
5
Inspect the engine's timing system for proper alignment and function.
6
Perform a compression test on the engine cylinders to assess internal wear.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the battery to ensure safety during work.
Lift the vehicle if necessary and secure with jack stands.

2. Change Engine Oil

Sub-steps:
1. Drain the old engine oil by removing the oil drain plug and allowing it to completely empty into a suitable container.
2. Replace the oil filter with a new one, using an oil filter wrench to remove the old filter.
3. Install the new oil filter, ensuring it's properly tightened according to the manufacturer's specifications.
4. Reinstall the oil drain plug and tighten it to the correct torque (typically around 30 ft-lbs for most Toyota engines).
5. Refill the engine with the correct viscosity oil as specified in the owner's manual.

3. Replace Spark Plugs

Sub-steps:
1. Remove the ignition coil or spark plug wires from the spark plugs.
2. Use a spark plug socket and ratchet to remove the old spark plugs.
3. Inspect the old plugs for wear and replace them with new ones, ensuring the gap is set to the manufacturer's specifications.
4. Reinstall the ignition coils or spark plug wires.

4. Inspect Timing System

Sub-steps:
1. Remove the timing cover by unbolting it and disconnecting any necessary components.
2. Check the timing chain/belt for proper tension and alignment; replace if worn or damaged.
3. Reassemble the timing cover and ensure all fasteners are tightened to the recommended torque values.

5. Fuel System Cleaning

Sub-steps:
1. Add a high-quality fuel system cleaner to the fuel tank, following the product's instructions.
2. Drive the vehicle to allow the cleaner to circulate and break down deposits.