why is my Ford F-150 13th Generation (2015-2020) getting poor gas mileage

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

529 words

Problem Statement

Learn how to diagnose and fix poor gas mileage issues in Ford F-150 13th Generation (2015-2020). 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 the battery before working on electrical systems.
•Allow the engine to cool before performing any maintenance.

Symptoms

•Check engine light illuminated
•Decreased acceleration and power
•Rough idle or engine stalling
•Unusual engine noise
•Increased exhaust emissions
•Noticeable fuel odor

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential issues.
2
Check tire pressure and tread depth to ensure proper rolling resistance.
3
Inspect the air filter for clogs or dirt that may restrict airflow to the engine.
4
Evaluate fuel quality and ensure the correct octane rating is being used.
5
Examine the fuel injectors for clogs or leaks.
6
Inspect the exhaust system, including the catalytic converter, for blockages.

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
•Tire pressure gauge
•Fuel injector cleaning kit

Parts Required

•New air filter
•Fuel injector cleaning solvent
•New spark plugs

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential issues.
2
Check tire pressure and tread depth to ensure proper rolling resistance.
3
Inspect the air filter for clogs or dirt that may restrict airflow to the engine.
4
Evaluate fuel quality and ensure the correct octane rating is being used.
5
Examine the fuel injectors for clogs or leaks.
6
Inspect the exhaust system, including the catalytic converter, for blockages.

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 ensure safety during electrical inspections.

2. Replace Air Filter

Remove the air filter housing cover using a socket set.
Lift out the old air filter and inspect it for dirt and debris.
Install a new, clean air filter, ensuring it fits snugly in place.
Reattach the air filter housing cover and tighten screws to the manufacturer's specifications.

3. Clean Fuel Injectors

Use a fuel injector cleaning kit or solvent.
Disconnect the fuel line and connect the cleaning kit as per the manufacturer's instructions.
Run the engine or turn the ignition on to allow the cleaner to flow through the injectors.
Reconnect the fuel line securely after the cleaning process.

4. Inspect and Replace Spark Plugs

Remove the ignition coil or spark plug wires using a socket set.
Unscrew the old spark plugs and inspect for wear or carbon buildup.
Install new spark plugs, ensuring they are gapped correctly to manufacturer specifications.
Reattach the ignition coil or spark plug wires securely.

5. Check Tire Pressure

Use a tire pressure gauge to measure the pressure in all tires.
Inflate tires to the recommended pressure listed on the door jamb sticker or owner's manual.
Inspect the tires for uneven wear and replace if necessary.