what causes my Ford F-150 13th Generation (2015-2020) to burn oil

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

Error Codes

4-8 hours

Time

hard

Difficulty

high

Severity

4 min read

612 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

Discover the causes and solutions for excessive oil consumption in Ford F-150 (2015-2020). Step-by-step diagnostic and repair guide included.

Affected Component

Engine

Estimated Time

4-8 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 repairs.

Symptoms

•Check engine light illuminated
•Blue smoke from the exhaust
•Engine oil level dropping significantly between oil changes
•Increased oil consumption during operation
•Oil fouling on spark plugs

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related issues.
2
Inspect the engine for external oil leaks around seals and gaskets.
3
Perform a compression test to check for cylinder wear.
4
Conduct a leak-down test to determine if there are leaks in the cylinder head or rings.
5
Examine the PCV (Positive Crankcase Ventilation) system for blockages or malfunctions.
6
Check the oil filter and oil quality to ensure proper lubrication.

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
•Compression tester
•Leak-down tester
•Screwdriver
•Pliers
•Socket set
•Torque wrench
•Oil catch pan
•Flashlight

Parts Required

•New PCV valve
•Valve seals (if needed)
•Piston rings (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related issues.
2
Inspect the engine for external oil leaks around seals and gaskets.
3
Perform a compression test to check for cylinder wear.
4
Conduct a leak-down test to determine if there are leaks in the cylinder head or rings.
5
Examine the PCV (Positive Crankcase Ventilation) system for blockages or malfunctions.
6
Check the oil filter and oil quality to ensure proper lubrication.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the battery to ensure safety during repairs.

2. Inspect and Replace PCV System

Tools Required: Screwdriver, pliers
Sub-steps:
1. Locate the PCV valve on the engine (refer to the service manual for exact location).
2. Remove the hoses connected to the PCV valve using pliers.
3. Pull the PCV valve out of its housing.
4. Inspect the PCV valve for blockages; replace it if it's clogged.
5. Reinstall the new PCV valve and connect the hoses securely.

3. Perform Compression and Leak-Down Test

Tools Required: Compression tester, leak-down tester
Sub-steps:
1. Remove spark plugs to access the cylinders.
2. Attach the compression tester to the first cylinder and crank the engine to get a reading.
3. Record the pressure and repeat for all cylinders, noting any significant discrepancies.
4. For the leak-down test, connect the leak-down tester to the cylinder and introduce compressed air. Listen for hissing sounds indicating leaks.
5. Identify cylinders with low compression or significant leakage, indicating possible piston ring wear or valve issues.

4. Inspect for External Leaks

Tools Required: Oil catch pan, flashlight
Sub-steps:
1. Place an oil catch pan under the engine to catch any dripping oil.
2. Use a flashlight to inspect the engine for any signs of oil leaks, especially around gaskets, seals, and the oil pan.
3. Tighten or replace any leaking gaskets or seals as necessary.

5. Replace Worn Components

Tools Required: Socket set, torque wrench
Sub-steps:
1. If compression or leak-down tests indicate worn piston rings or valve seals, proceed with engine disassembly.
2. Remove the engine cylinder head and inspect the valve seals.
3. Replace faulty valve seals and piston rings based on manufacturer specifications.
4. Reassemble the engine, ensuring all bolts are torqued to the correct specifications.