why is my Honda Pilot making a knocking noise when I accelerate

Honda Pilot Third Generation (2016-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

590 words

Problem Statement

Learn how to diagnose and fix knocking noise during acceleration in Honda Pilot. Step-by-step guide with symptoms, diagnostic steps, 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

•Knocking noise that increases with acceleration
•Possible loss of power during acceleration
•Vibration felt in the steering wheel or chassis
•Engine misfire or rough idle
•Check engine light may be illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any diagnostic trouble codes (DTCs)
2
Inspect the engine oil level and condition; low or dirty oil can cause knocking sounds
3
Check the spark plugs and ignition system for misfires or wear
4
Inspect the exhaust system for loose components or damage that could create noise
5
Examine the engine mounts for wear or deterioration that might lead to excessive movement
6
Test the drive shaft and CV joints for any signs of wear or play

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
•Oil filter wrench
•Torque wrench
•Jack and jack stands

Parts Required

•Engine oil (5W-20)
•Oil filter
•Spark plugs
•Engine mounts (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any diagnostic trouble codes (DTCs)
2
Inspect the engine oil level and condition; low or dirty oil can cause knocking sounds
3
Check the spark plugs and ignition system for misfires or wear
4
Inspect the exhaust system for loose components or damage that could create noise
5
Examine the engine mounts for wear or deterioration that might lead to excessive movement
6
Test the drive shaft and CV joints for any signs of wear or play

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a flat surface and engage the parking brake.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Engine Oil

Sub-steps:
1. Remove the oil drain plug using a socket wrench and drain the old oil into a suitable container.
2. Replace the oil filter using an oil filter wrench.
3. Reinstall the drain plug and tighten it to the manufacturer’s specified torque (typically around 20-25 ft-lbs).
4. Refill the engine with the appropriate type of oil (5W-20 for most Honda Pilots) through the oil filler cap.

3. Check and Replace Spark Plugs

Sub-steps:
1. Remove the ignition coils by unscrewing the bolts and gently pulling them out.
2. Use a spark plug socket to unscrew the spark plugs from the cylinder head.
3. Inspect the condition of the spark plugs; replace if worn or fouled.
4. Gap new spark plugs according to specifications and install them, tightening to the manufacturer’s torque specification (usually around 13-15 ft-lbs).

4. Inspect and Tighten Exhaust Components

Sub-steps:
1. Visually inspect the exhaust system from the manifold to the tailpipe for any loose connections or damage.
2. Use a wrench to tighten any loose bolts or clamps.
3. Replace any damaged sections of the exhaust system if necessary.

5. Inspect and Replace Engine Mounts

Sub-steps:
1. Raise the vehicle using a lift or jack stands to access the engine mounts more easily.
2. Inspect the engine mounts visually for cracks or signs of deterioration.
3. Remove the bolts securing the engine mounts to the engine and frame.
4. Replace with new engine mounts and torque bolts to the manufacturer’s specifications.