Is Power Steering Fluid Supposed to Bubble?

No ower steering fluid is not supposed to bubble. Simple as that. If you notice your power steering fluid is bubbling, you should take prompt actions as soon as possible to fix the issue. This article is all about this important topic. 

Is Power Steering Fluid Supposed to Bubble?

No, consistent bubbling often indicates air inside your power steering system, which can lead to inefficiencies and potential damage within your system.

As mentioned it is a signal of the presence of air, which can decrease your fluid’s efficiency. Air can cause cavitation, wherein tiny bubbles collapse and generate intense shock waves, damaging your system’s components.

While a small number of tiny bubbles immediately after a fluid change might not be alarming, persistent or excessive bubbling warrants your attention. It’s essential for you to maintain your power steering system to ensure smooth vehicle operations and prolong the system’s life.

What Causes Bubbles in Power Steering Fluid?

Here are some reasons for the occurrence of bubbles in the power steering fluid. It’s essential for you to understand that the introduction of air into your power steering system is the primary culprit.

Low Fluid Level

If your power steering fluid is below the recommended level, the pump might suck in air, leading to bubbles in the fluid. This is often your first thing to check when noticing frothiness in your fluid.

Leaky Seals or Hoses

Compromised seals or cracks in your hoses can introduce air into the system, especially when your vehicle is in operation. This can be identified by spotting fluid leaks within your corresponding areas.

Improperly Sealed Reservoir Cap

If your reservoir cap isn’t tightly sealed or if your gasket is damaged, air can get drawn into your system, causing aeration of the fluid.

Recent Maintenance

Think of it as the system’s way of adjusting after a makeover. Sometimes, after changing your fluid or replacing parts of your steering system, air can get trapped. This might result in temporary bubbling until your system is adequately bled.

The Impact of Bubbles in the Power Steering Fluid 

The presence of air bubbles in the power steering fluid can introduce you to a slew of challenges. Here’s how it can influence your driving experience:

Steering Difficulty

One of your primary symptoms of having bubbles is increased steering effort. Bubbles can cause an inconsistency within your fluid pressure, making your steering wheel feel harder to turn, especially during slow maneuvers or if you are parking.

Noise

Aeration of your fluid often results in a noticeable whining or groaning sound from your power steering pump, especially during turns. This noise indicates that your pump is circulating a mixture of fluid and air.

Erratic Steering Response

Bubbles can lead you to uneven fluid flow, causing you unpredictable steering behavior. This might manifest as jerky or hesitant steering responses, which can be disconcerting for you, as suggested by some of our customers.

Increased Wear

Over time, your pump can get damaged due to the constant circulation of aerated fluid. Air bubbles increase friction and decrease your fluid’s lubrication properties, leading to premature wear of your system’s components.

While bubbles within your power steering fluid might seem innocuous, they can significantly degrade your driving experience and lead you to potential safety concerns. Make sure you arrange regular checks and maintenance, as they are essential to ensure your optimal steering performance.

How to Get Rid of Bubbles in the Power Steering Fluid?

To get rid of bubbles in the power steering fluid, first, check the fluid level and inspect for leaks. Ensure the fluid is at the correct level and repair any leaks to prevent air from entering the system. With the engine running, turn the steering wheel from lock to lock several times to help circulate the fluid and remove air bubbles.

Some power steering systems have a bleeder valve that can be used to remove air from the system. Refer to your vehicle’s manual for the location of the bleeder valve and the proper procedure for bleeding the system.

After bleeding the system, check the fluid level again and top up if necessary. Repeat these steps if air bubbles persist. Addressing leaks and other issues promptly can prevent future problems with air in the power steering system. If unsure, consult a professional mechanic.

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