The CCV (Crankcase Ventilation) filter on the 6.7 Cummins engine is an essential component that helps trap oil vapor and other contaminants from the engine’s crankcase. Its regular replacement is key to maintaining engine performance and reducing unwanted buildup.

Why Should You Change the CCV Filter?

Changing the CCV filter on your 6.7 Cummins ensures that harmful contaminants don’t accumulate in the engine. A clogged filter can reduce engine efficiency, cause excess oil consumption, and lead to increased emissions.

Steps to Change the CCV Filter 6.7 Cummins

1. Preparation

Before beginning, make sure you have all the tools and materials needed to change the CCV filter.

• Tools and Materials: You’ll need basic hand tools such as wrenches, a screwdriver, gloves, a new CCV filter, and a rag for cleaning.
• Other preparations: Park the vehicle on a flat surface and ensure the engine has cooled down. Disconnect the battery to prevent any electrical issues while working.

2. Removal of the Old CCV Filter

Now that you’re prepared, it’s time to locate and remove the old CCV filter.

• Locate the CCV Filter: The CCV filter on a 6.7 Cummins engine is typically located on the driver’s side of the engine near the valve cover. Look for the crankcase ventilation hose.
• Remove the Intake Hose: Using a wrench, carefully disconnect the intake hose from the filter assembly. Keep the hose out of the way for easy access.
• Take Out the Old Filter: Once the intake hose is removed, you can now take out the old filter.

3. Cleaning and Inspection

After the removal of the old CCV filter, inspect the area for any oil residue or dirt. Then clean the area using a rag or shop towel. 

• Clean the Crankcase Ventilation Ports: It’s important to ensure the crankcase ventilation ports are clear of contaminants. Use a soft brush or rag to wipe any buildup.
• Inspect the Hoses and Connectors: Before installing the new filter, check the hoses and connectors for wear or cracks. If the hoses are damaged, it’s a good idea to replace them at this point.

4. Installation of the New CCV Filter

When you have finished all removal, cleaning, and inspection steps, it is time to take the new CCV filter for installation. 

• Position the New Filter: Place the new filter in the housing, ensuring it is properly sealed. Reattach any clamps or fasteners if necessary.
• Reattach the Hoses: Once the new filter is in place, reattach the intake hose to the CCV filter assembly. Tighten any clamps to ensure a secure fit.

5. Post-Installation Checks and Engine Startup

With the new filter installed, there are a few steps to check whether the filter and the engine work properly.

• Reconnect the Battery: Reconnect the vehicle’s battery to ensure power is restored to the system.
• Start the Engine: Turn on the engine and let it idle for a few minutes. Listen for any unusual noises and ensure that the engine is running smoothly.
• Take a Test Drive: After the engine has been running for a few minutes, take the vehicle for a short test drive to ensure everything is functioning correctly. Watch for any warning lights on the dashboard and check for any oil leaks around the filter area.

Tips for Maintenance and Future Care

Regular replacement and maintenance of the CCV filter are essential to keep your 6.7 Cummins engine healthy.

• Regular Replacement: It’s recommended to replace the CCV filter at least every 15,000 to 30,000 miles, depending on your driving conditions.
• Regular Maintenance: In addition to changing the CCV filter, keep up with other engine maintenance like oil changes, air filter replacements, and inspections to ensure optimal engine performance.

The CCV filter is an important part of the engine. Correctly changing the CCV filter on your 6.7 Cummins is crucial for engine longevity and performance. By following the steps mentioned above, you can ensure that your engine operates smoothly, reducing the risk of contaminants and buildup. Furthermore, regular maintenance will keep your engine running at its best.