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What happens if you don't change ccv filter 6.7 cummins

  • Author: SPELAB Mechanical Engineer (focusing on car modification for 10 years)


You may not know this, but your Cummins 6.7 CCV Filter should be changed every 30,000 miles. Failing to do so can result in a number of problems, including decreased performance and even engine failure.

Fortunately, it's an easy job that can be done in just a few minutes with the right tools. In this article, we'll show you how to change your CCV Filter and explain why it's so important to do so.

An Overview of the 6.7 Cummins CCV Filter

  • The Cummins CCV Filter, or Crankcase Ventilation Filter, is a vital component of the 6.7 Cummins engine. It is responsible for removing oil and other contaminants from the crankcase ventilation system, which helps to prevent sludge build-up and keeps the system running smoothly.
  • If the CCV Filter is not replaced at the recommended intervals, it can become clogged and unable to do its job properly. This can lead to a number of problems, including decreased engine performance, increased oil consumption and emissions, and even engine failure.
  • For these reasons, it is essential to replace the CCV Filter at the recommended intervals.What happens if you don't change ccv filter 6.7 cummins

The Risks of Not Changing Your 6.7 Cummins CCV Filter

  • You're taking a big risk if you don't change your 6.7 Cummins CCV filter.
  • The CCV (charge air cooler) system on your truck helps to cool the air that enters the engine. This system relies on the CCV filter to keep it free from contaminants, which can damage the system and lead to decreased performance and even engine failure.
  • That's why it's so important to change your CCV filter on a regular basis. If you don't, you're opening yourself up to a whole world of trouble.

What Is a 6.7 Cummins CCV Reroute?

  • The 6.7 Cummins CCV reroute is a modification that some people make to the factory CCV system on their trucks. The purpose of the reroute is to keep the CCV system from getting plugged up with soot and debris.
  • If you don't change your 6.7 Cummins CCV filter, there are a few things that can happen. First, the CCV system can get plugged up and stop working properly. This can cause all sorts of problems with your truck, including loss of power, stalling, and smoke and soot from the exhaust.
  • Second, all that unburned fuel can start to build up in your engine, which can eventually cause it to fail. Finally, all that unburned fuel can also start to corrode your engine parts, leading to expensive repairs down the road.

Benefits of a 6.7 Cummins CCV Delete

  • Now that you know the importance of changing your 6.7 Cummins CCV filter, you might be wondering what else you can do to keep your engine running smoothly and efficiently. One popular option is to get a 6.7 Cummins CCV delete kit. This is a simple, affordable upgrade that can offer a lot of benefits for your truck.What happens if you don't change ccv filter 6.7 cummins
  • The CCV delete kit improves engine efficiency by rerouting the hot exhaust from the valve cover directly out to the exhaust pipe without passing through the engine intake system. This removes any potential oil entering the intake, reducing smoke output and increasing airflow and performance.
  • The CCV delete also helps reduce crankcase pressure while allowing it to vent quicker, which improves overall engine performance. Plus, it gives your truck an aggressive new sound, making it stand out on the road.

How to Replace a 6.7 Cummins CCV Filter

Replacing the 6.7 Cummins CCV filter isn't a hard job, but it's one that should be noticed. First, you'll need to locate the CCV filter. It's housed near the engine bay in a plastic housing and connected to two rubber hoses. Make sure to clean off any dirt or debris from the filter, then you'll need to disconnect both of the hoses.

Once that's done, you can twist off the old CCV filter and replace it with a new one. You'll want to make sure that it's seated properly and securely before reconnecting both of the hoses back onto it. When everything is firmly in place, you can test it out by revving up your engine and listening for any strange noises coming from your engine bay – if all is quiet, then you've successfully replaced your 6.7 Cummins CCV filter!


The consequences of not changing your 6.7 Cummins CCV filter can be disastrous. Not only could you seriously damage your engine, but you could also end up with a hefty repair bill. So, if you haven't already changed your ccv filter, it's time to do so now. If you're still not convinced, consider this:

  • Not changing your filter can lead to a build-up of sludge and debris in your engine, which can eventually cause serious damage.
  • A clogged ccv filter can cause your engine to overheat, which can lead to even more damage.
  • Not changing your filter can also void your warranty, so if something does go wrong, you'll be on your own.
  • Finally, it's simply good practice to change your filter regularly, so you can avoid all of these potential problems.What happens if you don't change ccv filter 6.7 cummins

So, there you have it. The risks of not changing your 6.7 Cummins ccv filter are simply too great. Do yourself a favor and change it today.

1 comment

  • Justin

    One of the most common and unfortunate things that happen if you don’t change the CCV filter is blowing out oil seals due to the increased crankcase pressure caused by a clogged CCV filter. The front seal on the timing cover seems to be the most common to blow out first, and as I’m sure a lot of guys already know…it’s a complete pain to replace! Changing the CCV filter every 30k miles instead of the OEM recommended 67,500 miles is just CHEAP insurance in my honest opinion! One more thing…Don’t buy cheap CCV filters online from Amazon or eBay, etc. They’re completely junk and will cause issues right off the bat. Get a good name brand filter from a reputable source such as Geno’s, AutoZone, Advance Auto, or FleetGaurd just to name a few. It’s well worth the extra $$ spent, trust me!

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