how to fix a hard start issue on Ford F-150 13th Generation (2015-2020)

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

578 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 start issues in Ford F-150 (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the negative terminal first.
•Relieve fuel system pressure before disconnecting fuel lines.
•Ensure ignition is off before handling ignition components.
•Disconnect the battery before working on electrical components.

Symptoms

•Engine cranks but does not start
•Extended cranking time before engine starts
•Engine stalling shortly after starting
•Poor fuel economy
•Check engine light illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential trouble codes.
2
Check the battery voltage and condition; ensure it is fully charged and connections are clean.
3
Inspect the fuel system for proper pressure; use a fuel pressure gauge to measure fuel pump output.
4
Examine the ignition system components, including spark plugs, ignition coils, and wiring.
5
Test the crankshaft position sensor and camshaft position sensor for proper operation.
6
Verify that the air intake system is clean and that the air filter is not clogged.

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
•Socket set
•Battery terminal cleaner

Parts Required

•New battery (if needed)
•Fuel pump (if necessary)
•Spark plugs
•Ignition coils (if required)
•Crankshaft or camshaft position sensor (if faulty)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential trouble codes.
2
Check the battery voltage and condition; ensure it is fully charged and connections are clean.
3
Inspect the fuel system for proper pressure; use a fuel pressure gauge to measure fuel pump output.
4
Examine the ignition system components, including spark plugs, ignition coils, and wiring.
5
Test the crankshaft position sensor and camshaft position sensor for proper operation.
6
Verify that the air intake system is clean and that the air filter is not clogged.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to ensure safety.
Raise the vehicle if needed for access to components.

2. Inspect and Replace Battery

Check the battery voltage with a multimeter; it should read around 12.6 volts.
If the battery is weak, replace it with a new one.
- Tools Required: Multimeter, socket set, battery terminal cleaner
- Safety Warning: Always disconnect the negative terminal first.

3. Fuel System Inspection

Connect a fuel pressure gauge to the fuel rail.
Turn the ignition to the "On" position without starting the engine and check for proper fuel pressure (should be around 30-40 psi).
If pressure is low, check the fuel pump fuse, relay, and wiring. Replace the fuel pump if necessary.
- Tools Required: Fuel pressure gauge, socket set
- Safety Warning: Relieve fuel system pressure before disconnecting fuel lines.

4. Ignition System Check

Remove the spark plugs and inspect for wear or fouling. Replace if necessary.
Test ignition coils for resistance using a multimeter; replace any faulty coils.
- Tools Required: Socket set, multimeter
- Safety Warning: Ensure ignition is off before handling ignition components.

5. Sensor Testing

Check the crankshaft and camshaft position sensors for proper output using a multimeter.
Replace any malfunctioning sensors.
- Tools Required: Multimeter, socket set
- Safety Warning: Disconnect the battery before working on electrical components.