why does my Toyota Corolla E170 (2013-2019) have a strange smell when I start it?

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

552 words

Problem Statement

Learn how to diagnose and fix strange smells when starting your 2013-2019 Toyota Corolla E170. 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 before inspecting or working on the cooling system.

Symptoms

•Unusual odor (burning, sweet, or fuel-like)
•Check engine light illuminated
•Visible smoke from the exhaust
•Rough engine idle
•Decreased fuel economy

Diagnostic Steps

1
Inspect the engine oil level and condition to check for contamination.
2
Scan for error codes using an OBD-II scanner to identify potential engine issues.
3
Check for any visible leaks under the vehicle, especially from the oil or coolant systems.
4
Inspect the exhaust system for any signs of damage or leaks.
5
Examine the air filter and intake system for debris or foreign objects.
6
Assess the coolant level and inspect for signs of coolant leaks.

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
•Oil catch pan
•Clean rags
•Oil filter wrench
•Pliers
•Funnel

Parts Required

•Engine oil (5W-20)
•Oil filter
•Coolant
•Exhaust clamps (if needed)

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Diagnostic Steps

1
Inspect the engine oil level and condition to check for contamination.
2
Scan for error codes using an OBD-II scanner to identify potential engine issues.
3
Check for any visible leaks under the vehicle, especially from the oil or coolant systems.
4
Inspect the exhaust system for any signs of damage or leaks.
5
Examine the air filter and intake system for debris or foreign objects.
6
Assess the coolant level and inspect for signs of coolant leaks.

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 prevent electrical issues.

2. Inspect Engine Oil

Sub-steps:
1. Remove the dipstick and wipe it clean.
2. Reinsert the dipstick and pull it out again to check the oil level.
3. If the oil is discolored or has a burnt smell, it may need to be changed.
Tools Required: Oil catch pan, clean rags.

3. Change Engine Oil (if necessary)

Sub-steps:
1. Drain the old oil using a wrench to remove the oil drain plug.
2. Replace the oil filter with a new one.
3. Reinstall the drain plug and fill with the appropriate type of oil (5W-20 recommended).
Tools Required: Socket set, oil filter wrench, funnel.
Torque Specification: Tighten the oil drain plug to 25 ft-lbs.

4. Check Coolant System

Sub-steps:
1. Inspect the coolant reservoir for the appropriate level and color.
2. Look for any signs of coolant leaks around hoses and the radiator.
3. If leaks are present, replace damaged hoses or the radiator.
Tools Required: Pliers for hose clamps, coolant.

5. Inspect Exhaust System

Sub-steps:
1. Visually inspect the exhaust pipes and muffler for holes or rust.
2. Start the engine and listen for unusual noises or hissing from the exhaust.
3. Tighten any loose connections or replace damaged components.
Tools Required: Wrench set, exhaust clamps if needed.