Volkswagen Golf MK7 (2015-2019) how to fix the oil consumption issue

Volkswagen Golf MK7 (2015-2019)

Error Codes

4-8 hours

Time

hard

Difficulty

high

Severity

3 min read

590 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 diagnose and fix excessive oil consumption in Volkswagen Golf MK7 (2015-2019). Step-by-step guide with symptoms, diagnostics, and repairs.

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 opening any components.

Symptoms

•Check engine light illuminated
•Blue smoke from the exhaust
•Frequent need to add engine oil
•Engine misfires or rough running
•Poor fuel economy
•Oil warning light activation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related faults.
2
Inspect the engine oil level and condition; note if oil is low or dirty.
3
Perform a visual inspection for oil leaks around the engine, gaskets, and seals.
4
Conduct a compression test to assess the health of the engine cylinders.
5
Check the Positive Crankcase Ventilation (PCV) system for blockages or malfunctions.
6
Inspect the turbocharger (if equipped) for oil leaks into the intake or exhaust.

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
•Wrench set
•Pliers
•Torque wrench
•Gasket scraper
•Engine hoist

Parts Required

•New PCV valve
•Valve cover gasket
•Oil control rings (if needed)
•Engine oil (high-quality, VW-approved)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related faults.
2
Inspect the engine oil level and condition; note if oil is low or dirty.
3
Perform a visual inspection for oil leaks around the engine, gaskets, and seals.
4
Conduct a compression test to assess the health of the engine cylinders.
5
Check the Positive Crankcase Ventilation (PCV) system for blockages or malfunctions.
6
Inspect the turbocharger (if equipped) for oil leaks into the intake or exhaust.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery negative terminal to ensure safety.

2. Replace PCV Valve

Tools Required: Socket set, wrench set, pliers.
Sub-steps:
1. Locate the PCV valve; it is usually found on the valve cover.
2. Remove any hoses connected to the PCV valve using pliers.
3. Unscrew and remove the old PCV valve.
4. Install the new PCV valve, ensuring it is seated properly.
5. Reattach the hoses securely.

3. Replace Valve Cover Gasket

Tools Required: Socket set, torque wrench, gasket scraper, RTV silicone (if required).
Sub-steps:
1. Remove components obstructing access to the valve cover (e.g., air intake, coils).
2. Unscrew the valve cover bolts using a socket set.
3. Carefully lift the valve cover and scrape off the old gasket material.
4. Clean the mating surfaces with a solvent.
5. Place the new gasket onto the valve cover, applying RTV silicone if specified by the manufacturer.
6. Reinstall the valve cover and torque the bolts to the manufacturer’s specifications.

4. Inspect and Replace Oil Control Rings (if necessary)

Tools Required: Engine hoist (for engine removal), complete engine rebuild kit.
Sub-steps:
1. If the engine has significant oil consumption post-PCV and gasket replacement, remove the engine.
2. Disassemble the engine to access the pistons and oil control rings.
3. Replace the oil control rings with new parts from the rebuild kit.
4. Reassemble the engine, ensuring all components are torqued to specifications.