how to fix a broken timing chain in Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

4-8 hours

Time

hard

Difficulty

high

Severity

3 min read

411 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 fix a broken timing chain in a 2013-2019 Toyota Corolla E170. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Engine

Estimated Time

4-8 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening any components to prevent burns.

Symptoms

•Engine won't start
•Unusual noises from the engine compartment (e.g., rattling or clanking)
•Check engine light illuminated
•Engine misfires or runs roughly if it starts
•Oil leaks near the timing chain cover

Diagnostic Steps

1
Verify the condition of the timing chain by removing the timing chain cover.
2
Inspect for visible damage or wear on the timing chain and associated components (tensioners, guides).
3
Check for engine codes using an OBD-II scanner to identify any related issues.
4
Perform a compression test on the cylinders to assess engine condition.
5
Inspect the oil for metal particles indicating internal damage.

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
•Torque wrench
•Timing chain tool kit
•Jack and jack stands

Parts Required

•New timing chain
•Timing chain tensioners and guides
•Engine oil and filter
•Timing cover gasket

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Diagnostic Steps

1
Verify the condition of the timing chain by removing the timing chain cover.
2
Inspect for visible damage or wear on the timing chain and associated components (tensioners, guides).
3
Check for engine codes using an OBD-II scanner to identify any related issues.
4
Perform a compression test on the cylinders to assess engine condition.
5
Inspect the oil for metal particles indicating internal damage.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to prevent electrical shorts.
Lift the vehicle and secure it on jack stands.

2. Remove Components

Sub-steps:
1. Remove the air intake duct and throttle body for access.
2. Drain engine oil and remove the oil pan.
3. Remove any necessary covers (engine cover, timing chain cover).
4. Remove the crankshaft pulley using a socket set and torque wrench.

3. Replace Timing Chain

Sub-steps:
1. Align the timing marks on the crankshaft and camshaft gears.
2. Remove the broken timing chain and any damaged tensioners or guides.
3. Install the new timing chain, ensuring proper tension and alignment with marks.
4. Replace tensioners and guides as needed, following manufacturer specifications.

4. Reassemble Engine

Sub-steps:
1. Reinstall the timing chain cover with new gasket and torque bolts to specifications.
2. Reinstall the oil pan and refill with fresh oil.
3. Reattach the crankshaft pulley, air intake duct, and throttle body.
4. Reconnect the battery.

5. Final Checks

Sub-steps:
1. Start the engine and listen for unusual sounds.
2. Check for leaks from timing chain cover and oil pan.
3. Monitor engine performance for any irregularities.

Tools Required:

OBD-II scanner
Socket set
Torque wrench
Timing chain tool kit
Jack and jack stands

Parts Required:

New timing chain
Timing chain tensioners and guides
Engine oil and filter
Timing cover gasket

Estimated Repair Time: 4-8 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Allow the engine to cool before opening any components to prevent burns.