If you own a Harley Davidson motorcycle and you’re noticing oil leaking from your air cleaner, it could be a sign of a bigger problem. In this article, we’ll explore the common causes of leaky air cleaners on Harley Davidsons, how to troubleshoot and fix them, and tips for prevention in the future.

Causes of a Leaking Oil Air Cleaner on a Harley Davidson Motorcycle

The most common cause of an oil leak from the air cleaner on a Harley Davidson is due to an overfilled engine oil tank. When too much engine oil is added to the tank, it will eventually be forced out through other points such as the air cleaner or spark plugs. Additionally, worn or cracked gaskets can also cause leaks in some cases. If your bike has been sitting unused for awhile without proper storage, it’s possible that gaskets have dried out and become cracked overtime. Other causes may include loose fittings or clogged filters that can lead to pressure buildup and eventual leakage.

Troubleshooting Steps for Fixing an Oil Leak from the Air Cleaner

If you’ve determined that your Harley Davidson is leaking oil from the air cleaner, there are a few steps you can take to fix it. First, check the engine oil level and make sure it’s not overfilled. If it is, drain some of the excess oil and see if that stops the leak. You should also check for any worn or cracked gaskets in the air cleaner and replace them if necessary. If you’re still having trouble, try using Teflon tape on all of your fittings to ensure a tight seal.

How to Fix Harley Leaking Oil from Air Cleaner

Tips for Preventing Future Oil Leaks from Harley Davidsons’ Air Cleaners

To prevent future oil leaks from Harley Davidsons’ air cleaners, regularly check your engine oil level to ensure it is not overfilled. You should also inspect your gaskets periodically and replace them when needed. Finally, be sure to store your bike in a cool dry place when not in use so that gaskets don’t dry out or crack due to lack of lubrication. Also here is a step-by-step guide on how to locate your Harley speed sensor. Learn how to identify the location of the sensor, what type of sensors your Harley may have, and how to check for proper wiring and installation.


Oil leaks from Harley Davidson air cleaners are often caused by an overfilled engine oil tank or worn/cracked gaskets. To fix this problem, be sure to double-check your engine oil level, inspect and replace gaskets if necessary, and use Teflon tape to ensure a tight seal. To prevent future oil leaks, regularly check your engine oil level and inspect your gaskets for wear. Additionally, be sure to store your bike in a cool dry place when not in use. Following these steps should help keep your Harley Davidson running smoothly for years to come!

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