2004 Honda Civic Oil Leak Driver Side – Reasons and Solutions

Reading Time: 2 minutes

If you own a 2004 Honda Civic, it is not uncommon to experience oil leaks on the driver’s side. 

This article will discuss the possible reasons for this oil leak and provide solutions. Remember that regular maintenance is essential for the longevity of your vehicle, and addressing oil leaks promptly can prevent more significant issues from arising.

Related Topics:

2004 Honda Civic Oil Leak Driver Side – Main Reason

A common issue in Honda Civics, especially the B series and H series engines is the failure of the cam cover cap’s O-ring. This small plastic part seals the camshaft, and with time and exposure to engine heat, the O-ring can become brittle, dry out, and fail to do its job, leading to oil leaks.

2004 Honda Civic Oil Leak Driver Side – Solutions

1. Replace the Cam Cover Cap

The easiest and most effective way to fix the oil leak caused by a worn-out cam cover cap O-ring is to replace the cap with a genuine Honda part. Aftermarket options are available, but the genuine Honda part is usually around $10 and is considered more reliable.


  • First, use a flathead screwdriver to carefully pry out the old cam cover cap. Be gentle to avoid damaging the surrounding aluminum.
  • Clean up the oil that may have leaked out, and ensure the surface is clean before installing the new cap.
  • Lubricate the new O-ring with oil and press the new cam cover cap into place, ensuring the clips engage properly.
  • Clean the engine area with brake cleaner to remove any oil residue.

2. Metal Replacement

Another option is to replace the plastic cam cover cap with a metal one. However, this requires taking apart the valve cover and is more time-consuming than simply replacing the plastic cap.

3. Regular Maintenance

Regularly checking your engine for oil leaks and promptly addressing them can prevent more significant issues in the long run. Make sure to keep an eye on your vehicle’s oil level and top it off if necessary.


Oil leaks on the driver’s side of a 2004 Honda Civic are usually caused by a worn-out cam cover cap O-ring. The most effective solution is to replace the plastic cap with a genuine Honda part. Regular maintenance and timely action can prevent further complications and ensure the longevity of your vehicle. If you have any questions, feel free to leave them in the comments section, and don’t forget to subscribe for more automotive tips and tricks.

Author's Image

M Waqas Saeed

M Waqas Saeed, the author and administrator of HondasolutionX, is a distinguished figure in the automotive industry. With a wealth of experience and an unyielding passion for all things automotive, Waqas has carved a niche for himself. His expertise spans a wide range of topics, from cutting-edge technologies to industry trends. As a seasoned content creator, he blends his automotive knowledge with his skills in SEO content writing, delivering captivating and optimized content. Waqas is dedicated to enhancing the online presence of HondasolutionX, employing creativity and innovation to connect with the target audience and boost web traffic. He's a driving force behind the company's success.