how do I know if my Ford Explorer Fifth Generation (2011-2019) has a bad fuel injector

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

509 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 fuel injector problems in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with symptoms and solutions.

Affected Component

Fuel System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow engine to cool before opening the fuel system.

Symptoms

•Check engine light illuminated
•Rough idle or engine misfire
•Decreased fuel efficiency
•Unusual engine noises (ticking or knocking)
•Strong fuel odor near the engine compartment
•Engine stalling or difficulty starting

Diagnostic Steps

1
Scan the vehicle's onboard diagnostic system using an OBD-II scanner to check for error codes.
2
Listen for unusual sounds from the engine, particularly during idle.
3
Inspect the fuel injector connectors for damage or corrosion.
4
Perform a fuel pressure test using a fuel pressure gauge to verify the system's pressure.
5
Check for fuel leaks around the injector area.
6
Use a multimeter to test the resistance of the fuel injector coils.

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
•Fuel pressure gauge
•Multimeter
•Socket set
•Torque wrench
•Safety glasses
•Gloves

Parts Required

•Fuel injector(s)
•O-rings (if not included with new injector)

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Diagnostic Steps

1
Scan the vehicle's onboard diagnostic system using an OBD-II scanner to check for error codes.
2
Listen for unusual sounds from the engine, particularly during idle.
3
Inspect the fuel injector connectors for damage or corrosion.
4
Perform a fuel pressure test using a fuel pressure gauge to verify the system's pressure.
5
Check for fuel leaks around the injector area.
6
Use a multimeter to test the resistance of the fuel injector coils.

Solution

1. Preparation

Tools Required: OBD-II scanner, fuel pressure gauge, multimeter, socket set, safety glasses, gloves.
Ensure the vehicle is parked on a level surface and the engine is cool.

2. Disconnect Battery

Disconnect the negative battery terminal to prevent electrical shorts while working on the fuel system.

3. Remove Engine Cover (if applicable)

Using a socket set, remove the bolts securing the engine cover.
Lift off the cover and set it aside.

4. Remove Fuel Injector

Tools Required: Socket set, torque wrench.
Disconnect the electrical connector from the fuel injector by pressing the tab and gently pulling it off.
Remove the retaining clips or bolts securing the injector using the socket set.
Carefully pull the fuel injector out of the fuel rail, taking care not to damage the O-rings.

5. Inspect and Replace

Inspect the fuel injector for signs of wear, clogging, or physical damage.
If the injector is faulty, replace it with a new one, ensuring to lubricate the O-rings with clean engine oil before installation.
Reinstall the fuel injector by reversing the removal steps and securing it with clips or bolts to the specified torque.

6. Reconnect Components

Reconnect the electrical connector to the fuel injector.
Reattach the engine cover if it was removed.
Reconnect the negative battery terminal.