why does my Toyota Corolla E170 (2013-2019) burn oil

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

585 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 excessive oil consumption in the 2013-2019 Toyota Corolla. Step-by-step guide with symptoms, diagnostics, and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool before starting work.
•Ensure the vehicle is securely lifted if working underneath.

Symptoms

•Check engine light illuminated
•Blue smoke from the exhaust
•Oil pressure warning light activated
•Frequent need to add oil between changes
•Engine running rough or misfiring
•Increased emissions during inspection

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for related engine issues.
2
Inspect the oil level and condition; note if it is low or has a burnt smell.
3
Check for visible oil leaks around the engine and under the vehicle.
4
Perform a compression test to evaluate the engine's internal condition.
5
Inspect the PCV (Positive Crankcase Ventilation) system for blockages or failures.
6
Conduct a leak-down test to assess the sealing of the engine components.

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
•Pliers
•Socket set
•Torque wrench
•Oil filter wrench
•Replacement PCV valve
•Replacement valve cover gasket
•Oil drain pan

Parts Required

•New PCV valve
•New valve cover gasket
•New oil filter
•Engine oil (5W-20 or as specified)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for related engine issues.
2
Inspect the oil level and condition; note if it is low or has a burnt smell.
3
Check for visible oil leaks around the engine and under the vehicle.
4
Perform a compression test to evaluate the engine's internal condition.
5
Inspect the PCV (Positive Crankcase Ventilation) system for blockages or failures.
6
Conduct a leak-down test to assess the sealing of the engine components.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the negative battery terminal for safety.

2. Inspect and Replace PCV Valve

Tools Required: Pliers, socket set, replacement PCV valve
Locate the PCV valve (typically on the valve cover).
Remove the old PCV valve by disconnecting the hose and unscrewing it.
Install the new PCV valve by reversing the removal process.
Reconnect the hose securely.

3. Replace Valve Cover Gasket

Tools Required: Socket set, torque wrench, gasket scraper, replacement valve cover gasket
Remove the valve cover bolts and lift off the valve cover carefully.
Scrape off any old gasket material from the valve cover and engine surface.
Place the new valve cover gasket in position and reattach the valve cover.
Torque the bolts to the manufacturer's specifications (usually specified in a repair manual).

4. Engine Oil Change

Tools Required: Oil filter wrench, oil drain pan, socket set, new oil filter, engine oil (5W-20 or as specified)
Remove the oil drain plug and allow the old oil to drain completely into the pan.
Replace the oil filter using an oil filter wrench.
Install the drain plug and torque to the specified value.
Fill the engine with new oil through the oil filler cap.

5. Monitor Engine Performance

Start the engine and let it idle to check for leaks and ensure smooth operation.
Allow the engine to run until it reaches operating temperature.
Check the oil level and top off if necessary.