how to troubleshoot Ford Explorer Sixth Generation (2020-present) exhaust smoke issues

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

628 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 troubleshoot and fix exhaust smoke issues in the Ford Explorer Sixth Generation (2020-present). Step-by-step guide with diagnostic procedures.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the engine to cool before opening the cooling system to avoid burns.

Symptoms

•White or blue smoke visible from the exhaust
•Sweet smell accompanying the exhaust smoke
•Engine misfire or rough idle
•Decreased engine performance or power loss
•Increased oil consumption
•Check engine light illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored fault codes related to the engine or emissions system.
2
Check engine oil level and condition, looking for signs of contamination or excessive consumption.
3
Inspect coolant level and condition to determine if there are signs of engine coolant leaking into the combustion chamber.
4
Perform a compression test on each cylinder to assess the health of the piston rings and valves.
5
Examine the exhaust system for any visible signs of leaks or damage, such as cracks or holes in the exhaust manifold or pipes.
6
Inspect the PCV valve and associated hoses for proper operation and blockage.

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
•Multimeter
•Compression tester
•Torque wrench
•Safety goggles

Parts Required

•Engine oil
•Oil filter
•Intake manifold gasket
•PCV valve

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored fault codes related to the engine or emissions system.
2
Check engine oil level and condition, looking for signs of contamination or excessive consumption.
3
Inspect coolant level and condition to determine if there are signs of engine coolant leaking into the combustion chamber.
4
Perform a compression test on each cylinder to assess the health of the piston rings and valves.
5
Examine the exhaust system for any visible signs of leaks or damage, such as cracks or holes in the exhaust manifold or pipes.
6
Inspect the PCV valve and associated hoses for proper operation and blockage.

Solution

1. Preparation

Gather tools: OBD-II scanner, socket set, multimeter, compression tester, torque wrench, and safety goggles.
Ensure the vehicle is parked on a flat surface and the engine is cool.

2. Addressing Oil Consumption

Drain engine oil: Remove the oil drain plug and let the oil fully drain into a container.
Replace oil filter: Use an oil filter wrench to remove the old filter and install a new one, lubricating the rubber gasket with new oil before installation.
Refill engine oil: Replace the drain plug and refill with the manufacturer-recommended oil type and quantity.

3. Repairing Coolant Leaks

Remove intake manifold: Disconnect necessary hoses and electrical connections, and unbolt the manifold using the appropriate socket size.
Inspect gaskets: Check for any blown or damaged gaskets and replace as necessary.
Reassemble intake manifold: Reinstall the manifold and torque the bolts to the manufacturer’s specifications.

4. Fixing Compression Issues

Remove spark plugs: Use a spark plug socket to remove each spark plug from the engine.
Perform compression test: Insert the compression tester into the spark plug hole and crank the engine. Record the readings for each cylinder.
Diagnose: If readings are low, inspect for worn piston rings or valves, and consider an engine rebuild or further disassembly if necessary.

5. PCV Valve Replacement

Locate the PCV valve: Refer to the service manual for the exact location, typically found on the valve cover.
Remove old PCV valve: Pull it out of its housing and inspect for blockages.
Install new PCV valve: Insert the new valve and ensure it’s securely fitted.