CAT C15 ACERT Problems that Require a Diesel Engine Rebuild Kit

Did you know that performing regular maintenance can go a long way in keeping your diesel engine operating at its peak?

Sometimes, though, you'll notice a drop in performance that will leave you wondering what you should do next. This problem, along with several additional issues, might indicate that you need a new rebuild kit for your Caterpillar C15 ACERT. 

We've put together some of the main symptoms you might notice if your ACERT is in need of a rebuild, as well as what options you have. Read on to find out what might be happening with your engine. 

Want to know more? You can also check out our video:



Looking for the right rebuild kit? Let our ASE Certified Technicians help you get exactly what you need!

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Symptoms Your C15 ACERT is Ready for a Rebuild


cat c15 acert rebuild kit symptoms | Highway & Heavy Parts


Like with most other diesel engine problems, there are a few symptoms you should know to help you decide if your C15 ACERT needs a rebuild. Those symptoms include:

  • Crankcase Pressure or Blowby
  • Oil Consumption
  • Knocking
  • Excessive Smoke
  • Loss of Compression
  • Poor Fuel Economy
  • Oil Sludge

If you notice any of these symptoms, you might want to take a look at what diesel engine rebuild kit options are available for you.

Not running an ACERT but noticing some of these problems? Check out our blog on when to rebuild your CAT C15 to learn more!


What to Check and Test on Your CAT C15 ACERT

Are you looking for some tests you can run to help you determine whether or not it's time to rebuild your engine? 

The first thing you can do is run an oil analysis. You'll want to be looking for things like high metal concentrations, foreign contaminants, and unfiltered air entering your system.

You might also want to check for excessive blowby. This can be caused by piston and piston ring wear, and causes high oil consumption. This can also include turbo issues, worn valve guides, and cylinder head issues.


cat c15 acert blowby | Highway & Heavy Parts


It's also important that you know the age of your engine, and when it was last rebuilt. Sometimes time is one of the biggest factors when it comes to determining when you should rebuild your engine, so make sure you know those important dates. 

Want to know more about tests you can run? Take a look at our article on preventive maintenance and your diesel engine.


What Are My C15 ACERT Rebuild Kit Options?

If you're in the market for a new rebuild kit, there are two common options for the C15 ACERT. The difference between them is the compression ratio for what your specific engine is tuned for. It's critical to order the correct rebuild kit for the specification your C15 ACERT was built on. 


cat c15 acert 625 lower compression piston | Highway & Heavy Parts


For example, the higher horsepower 625 uses a lower compression piston. We've seen past situations when operators eliminate the intake valve actuators on their engine. This results in very high cylinder pressures, which can cause a number of problems, including chordal fractures, cracked heads, or failed head gaskets. 

It's important to follow OEM specifications when ordering diesel engine parts, to ensure it functions properly inside your engine. Not doing so can cause failure of the component, or other components downstream. 

Not sure about the different kinds of rebuild kits? Read our blog on how to choose an engine rebuild kit to find out more.

If you need a new rebuild kit for your CAT C15 ACERT, Highway & Heavy Parts is here to help! We have a great selection to fit your engine's needs!


Need a rebuild kit or any other diesel engine replacement part for your CAT C15 ACERT? Call our ASE Certified Techs at 844-304-7688, or request a quote online!