my Ford Explorer Fifth Generation (2011-2019) has a hard start what could be wrong

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

621 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 hard starting issues in Ford Explorer 2011-2019. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Fuel System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the negative terminal first to avoid short circuits.
•Disconnect battery before working on electrical systems.
•Allow engine to cool before working on spark plugs to prevent burns.

Symptoms

•Engine cranks longer than normal before starting
•Engine may start with a sputter or rough idle
•Check engine light may be illuminated
•Battery appears to be in good condition but is still slow to turn the engine over
•Unusual fuel odor around the vehicle
•Reduced engine power or performance after starting

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any stored error codes.
2
Inspect the battery and connections for corrosion or looseness and test the battery voltage.
3
Check fuel pressure using a fuel pressure gauge to ensure it meets manufacturer specifications.
4
Inspect the fuel injectors for proper operation and blockage.
5
Verify the operation of the ignition system components, including spark plugs and coils.
6
Check the air intake system for blockages or leaks in the intake ducts.

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
•Multimeter
•Fuel pressure gauge
•Spark plug socket
•Ratchet
•Wrench set
•Fuel line removal tool
•Wire brush
•Battery terminal cleaner

Parts Required

•New battery (if required)
•Fuel filter
•Spark plugs
•Ignition coils (if required)

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Symptoms

•Engine cranks longer than normal before starting

•Engine may start with a sputter or rough idle

•Check engine light may be illuminated

•Battery appears to be in good condition but is still slow to turn the engine over

•Unusual fuel odor around the vehicle

•Reduced engine power or performance after starting

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any stored error codes.
2
Inspect the battery and connections for corrosion or looseness and test the battery voltage.
3
Check fuel pressure using a fuel pressure gauge to ensure it meets manufacturer specifications.
4
Inspect the fuel injectors for proper operation and blockage.
5
Verify the operation of the ignition system components, including spark plugs and coils.
6
Check the air intake system for blockages or leaks in the intake ducts.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the ignition is off.
Disconnect the negative battery terminal to ensure safety.

2. Check and Replace Battery

Sub-steps:
1. Inspect the battery for any signs of damage or age (check for a manufacturing date).
2. Clean the battery terminals with a wire brush if corrosion is present.
3. Test the battery voltage (should be above 12.4 volts).
4. If the battery is weak, replace it with a new one of the same specifications.
Tools Required: Multimeter, wire brush, battery terminal cleaner.
Safety Warning: Always disconnect the negative terminal first to avoid short circuits.

3. Inspect and Replace Fuel Filter

Sub-steps:
1. Locate the fuel filter (refer to vehicle manual for specific location).
2. Relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.
3. Disconnect the fuel lines from the filter (use caution as fuel may spill).
4. Replace the old filter with a new one, ensuring the flow direction matches.
5. Reconnect the fuel lines securely.
Tools Required: Fuel line removal tool, wrench set, safety glasses, rags to catch spills.

4. Replace Spark Plugs and Ignition Coils

Sub-steps:
1. Remove the engine cover if required to access spark plugs.
2. Disconnect the ignition coil connectors and remove the coils.
3. Remove old spark plugs using a spark plug socket.
4. Install new spark plugs with the correct gap (refer to specifications).
5. Reinstall ignition coils and reconnect connectors.
Tools Required: Spark plug socket, ratchet, torque wrench.
Safety Warning: Ensure engine is cool before working on spark plugs to prevent burns.