why is my Toyota Corolla E170 (2013-2019) using oil too quickly

Toyota Corolla E170 (2013-2019)

Error Codes

4-8 hours

Time

hard

Difficulty

high

Severity

3 min read

521 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 Toyota Corolla E170 (2013-2019). 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.

Symptoms

•Check engine light illuminated
•Blue smoke from the exhaust during acceleration
•Frequent topping off of engine oil
•Oil level dropping significantly between oil changes
•Unusual engine noises (ticking or knocking)
•Poor fuel economy

Diagnostic Steps

1
Check for any Diagnostic Trouble Codes (DTCs) using an OBD-II scanner to identify potential issues.
2
Inspect the engine oil level and condition, looking for signs of contamination or dilution.
3
Perform a compression test on each cylinder to check for internal engine wear.
4
Inspect the PCV (Positive Crankcase Ventilation) system for blockages or malfunctions.
5
Check for oil leaks around gaskets, seals, and the oil pan.
6
Conduct a cylinder leak-down test to pinpoint the source of excessive oil consumption.

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
•Torque wrench
•Socket set
•Oil filter wrench
•Compression tester
•Cylinder leak-down tester

Parts Required

•Valve cover gasket
•Oil pan gasket
•Front/rear main seals
•PCV valve
•Engine oil (correct viscosity)

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Diagnostic Steps

1
Check for any Diagnostic Trouble Codes (DTCs) using an OBD-II scanner to identify potential issues.
2
Inspect the engine oil level and condition, looking for signs of contamination or dilution.
3
Perform a compression test on each cylinder to check for internal engine wear.
4
Inspect the PCV (Positive Crankcase Ventilation) system for blockages or malfunctions.
5
Check for oil leaks around gaskets, seals, and the oil pan.
6
Conduct a cylinder leak-down test to pinpoint the source of excessive oil consumption.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to ensure safety.

2. Address Oil Leaks

Inspection: Visually examine the engine for oil leaks, focusing on the valve cover gasket, oil pan gasket, and front/rear main seals.
Replacement: If any gaskets or seals are found to be leaking:
1. Remove the affected components (e.g., valve cover).
2. Clean the mating surfaces thoroughly.
3. Replace the gasket or seal with a new part, ensuring proper alignment.
4. Torque bolts to manufacturer specifications.

3. Repair or Replace PCV System

Inspection: Remove the PCV valve and check for functionality; it should rattle when shaken.
Replacement: If faulty:
1. Disconnect the PCV valve from the hose.
2. Install a new PCV valve.
3. Reattach the hose securely.

4. Engine Repair (if necessary)

Compression Test Findings: If low compression is found in cylinders:
1. Remove the cylinder head.
2. Inspect piston rings and cylinder walls for wear.
3. Replace piston rings if necessary.
4. Reassemble the engine using new gaskets and torque to specifications.

5. Final Assembly

Refill the engine with the appropriate type and amount of oil.
Reconnect the battery and start the engine, ensuring no leaks are present.