How to Quiet Lifter Noise in Your Car Engine

If you are experiencing excessive noise coming from your car engine, it could be due to hydraulic lifters. We'll explore common causes and solutions to help you identify and address the issue.p>

Understanding Hydraulic Lifters

Hydraulic lifters are a type of valve actuation component found in many modern engines. Unlike mechanical lifters, hydraulic lifters are designed to maintain consistent valve clearance without the need for periodic adjustment. This makes them more maintenance-free but can also lead to noise issues over time.

Hydraulic lifters can become noisy for several reasons, including:

Low oil level Dirt or varnish buildup in the oil passages Malfunction or wear of the lifters

If you have an older car with adjustable lifters, they may need to be adjusted to reduce noise. However, most newer cars with hydraulic lifters are not adjustable, and the noise may require a more detailed inspection.

Steps to Quiet Lifter Noise

Here are some steps you can take to address the noise:

1. Check and Add Oil

If you notice that your oil level is low—by a quart or half a quart—try adding a quart of Liquid Wrench. Drive the car for about 25 miles to circulate the oil. This may help to remove any dirt or varnish that has accumulated, which could be causing the clattering noise. Then, change your oil and filter to ensure clean lubrication.

2. Clean and Test the Lifters

If the issue persists, you may need to clean and test the lifters. The most common cause of noise is excessive valve lash. To determine if this is the case, you should check the valve clearance and adjust it if necessary. Ensure you are using the right viscosity oil for your engine as specified by the manufacturer.

3. Replace Components When Necessary

If the aforementioned steps do not resolve the noise, and you are sure it is coming from the lifters, it may be time to replace them. Engine flushing oil and cleaning products are less commonly used, as they may not be as effective as more targeted solutions.

Preventative Maintenance Tips

To prevent future lifter noise, follow these maintenance tips:

Regularly check and top off your oil level Use the correct oil viscosity as recommended by the manufacturer Inspect and adjust valve clearance if your car has adjustable lifters Change the oil filter periodically

By taking these steps, you can help maintain your engine’s performance and reduce the risk of noise and other issues.

Conclusion

Hydraulic lifter noise can be a nuisance, but with the right approach, you can identify and resolve the issue. Whether it’s adding oil, cleaning the lifters, or even replacing them, taking action promptly can keep your engine running smoothly.