my Honda Pilot has bad gas mileage, what can I do to improve it?

Honda Pilot Third Generation (2016-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

556 words

Problem Statement

Learn how to diagnose and fix poor gas mileage in Honda Pilot. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

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 opening the oil drain plug.

Symptoms

•Check engine light illuminated
•Decreased acceleration performance
•Unusual engine noises
•Strong fuel smell
•Reduced engine power
•Increased emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying engine problems.
2
Check tire pressure and condition to ensure they are properly inflated and not causing drag.
3
Inspect the air filter for clogs; a dirty filter can hinder airflow and affect fuel efficiency.
4
Examine the fuel system, including the fuel filter and injectors, for any blockages or malfunctions.
5
Review engine oil level and quality; old or low oil can cause increased friction and poor performance.
6
Test the fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning correctly.

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
•Tire pressure gauge
•Fuel pressure gauge
•Socket set
•Oil filter wrench
•Fuel injector cleaning kit

Parts Required

•Air filter
•Engine oil (as per specifications)
•Oil filter
•Fuel injector cleaner

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying engine problems.
2
Check tire pressure and condition to ensure they are properly inflated and not causing drag.
3
Inspect the air filter for clogs; a dirty filter can hinder airflow and affect fuel efficiency.
4
Examine the fuel system, including the fuel filter and injectors, for any blockages or malfunctions.
5
Review engine oil level and quality; old or low oil can cause increased friction and poor performance.
6
Test the fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning correctly.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Safety warning: Allow the engine to cool before working.

2. Replace Air Filter

Remove the air filter cover by unscrewing any screws or clips.
Take out the old air filter.
Install a new air filter, ensuring it fits securely.
Reattach the air filter cover.

3. Inspect and Clean Fuel Injectors

Disconnect the fuel pump fuse and run the engine until it stalls to relieve fuel pressure.
Remove the fuel injectors from the intake manifold.
Use a fuel injector cleaning kit to clean the injectors, following the manufacturer's instructions.
Reinstall the injectors and ensure they are properly secured.

4. Change Engine Oil

Lift the vehicle using a jack and secure with jack stands.
Drain the old oil by removing the oil drain plug and letting it flow into a container.
Replace the oil filter using an oil filter wrench.
Reinstall the drain plug and fill the engine with fresh oil, adhering to the manufacturer's specifications.

5. Check Tire Pressure and Condition

Use a tire pressure gauge to check the pressure of all tires.
Inflate tires to the recommended PSI as per the owner’s manual.
Inspect tires for uneven wear and replace if necessary.