why does my Ford Explorer Fifth Generation (2011-2019) exhaust smell like gas?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

3-5 hours

Time

medium

Difficulty

high

Severity

3 min read

507 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 gasoline smell from exhaust in Ford Explorer 2011-2019. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Fuel System

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before working on the exhaust system to avoid burns.

Symptoms

•Strong gasoline smell from the exhaust
•Decreased fuel efficiency
•Engine misfiring or rough idle
•Check engine light illuminated
•Increased emissions or visible black smoke from the exhaust

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fault codes related to the fuel system or emissions.
2
Inspect the fuel injectors for leaks or signs of malfunction.
3
Check the condition of the spark plugs and ignition coils for wear and misfires.
4
Examine the exhaust system for any leaks, particularly at the manifold and catalytic converter.
5
Test the fuel pressure to ensure it is within the manufacturer's specified range.
6
Inspect the air intake system for any obstructions or leaks that may affect the air-fuel mixture.

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
•Fuel pressure gauge
•Screwdriver set

Parts Required

•Fuel injectors (if faulty)
•Spark plugs (if worn)
•Ignition coils (if faulty)
•Gaskets for exhaust components (if necessary)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fault codes related to the fuel system or emissions.
2
Inspect the fuel injectors for leaks or signs of malfunction.
3
Check the condition of the spark plugs and ignition coils for wear and misfires.
4
Examine the exhaust system for any leaks, particularly at the manifold and catalytic converter.
5
Test the fuel pressure to ensure it is within the manufacturer's specified range.
6
Inspect the air intake system for any obstructions or leaks that may affect the air-fuel mixture.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to prevent any electrical accidents.

2. Inspect and Replace Fuel Injectors

Sub-steps:
1. Remove the engine cover if present.
2. Disconnect the fuel injector electrical connectors.
3. Remove the fuel rail bolts and carefully pull the fuel rail off, ensuring no fuel spills.
4. Inspect each injector for cracks or leaks; replace any faulty injectors with new ones.
5. Reinstall the fuel rail and reconnect the electrical connectors.

3. Replace Spark Plugs and Ignition Coils

Sub-steps:
1. Remove the ignition coil bolts and disconnect the coil connectors.
2. Pull out the ignition coils from the spark plug wells.
3. Remove old spark plugs using a spark plug socket.
4. Install new spark plugs, ensuring to torque to manufacturer's specifications (typically around 13-15 lb-ft).
5. Reinstall the ignition coils and secure with bolts.

4. Repair or Replace Exhaust Components

Sub-steps:
1. Inspect the exhaust manifold and catalytic converter for any visible cracks or leaks.
2. If leaks are found, remove the faulty component using appropriate tools (socket set, wrenches).
3. Install new gaskets and the replacement part, ensuring all bolts are torqued to specifications.
4. Reconnect any exhaust hangers or clamps that were removed.

5. Test Fuel Pressure

Sub-steps:
1. Connect a fuel pressure gauge to the fuel rail service port.
2. Turn the ignition to the "on" position without starting the engine and observe the pressure reading.
3. Compare the reading to the manufacturer’s specifications (typically 30-50 psi).
4. If pressure is low, inspect the fuel pump and fuel filter for issues.

Tools Required:

OBD-II scanner
Socket set
Torque wrench
Fuel pressure gauge
Screwdriver set

Parts Required:

Fuel injectors (if faulty)
Spark plugs (if worn)
Ignition coils (if faulty)
Gaskets for exhaust components (if necessary)

Estimated Repair Time: 3-5 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Allow the engine to cool before working on the exhaust system to avoid burns.