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How to Repair a Floor Jack That Won’t Hold Pressure

How to Repair a Floor Jack That Won’t Hold Pressure?

Are you a car enthusiast? If so, then there’s a good chance that you have your own floor jack for when the need arises. These are great pieces of equipment to have on hand in case something goes wrong and it needs to be raised up in order to fix it right away.

But what if your floor jack simply won’t hold pressure? Of course, using it in such a condition is out of the question; it’s too risky. Doing so could cause serious damage to your vehicle or even harm yourself.

With that being said, you still need to raise your car in order for things can get fixed right? So what can you do with a floor jack that won’t hold pressure? First of all, take a deep breath and calm down. In many cases, you can successfully resolve this problem easily. Below we are discussing five steps that you should follow when your floor jack won’t lift:

Inspect the Lifting Capacity

In order to know that how to repair a floor jack that won’t hold pressure, the first thing that needs to be discussed is that each jack has a predetermined lifting capacity. This is the maximum height that you are able to lift something at with your jack, but it can’t exceed this limit.

The first thing that will happen if you try to exceed the lifting capacity of your jack is that it won’t be able to lift whatever it is you are trying to lift. If this happens, there are two possible outcomes – either the jack will rise until it reaches the vehicle’s body and it will slightly lift the wheel but go back down immediately or it will stop lifting completely.

However, it is possible that the jack will rise until it reaches the vehicle’s body and then it will go back down instead of slightly lifting the wheel off the ground. The reason for this happening is that if you continue to pump the device past its limits, it could cause internal leaks and damages to seals which prevent jacks from holding any amount of pressure.

Therefore, if you are not sure how much your jack can lift, make sure to check the device’s nominal lifting capacity against the weight of the vehicle that you are trying to lift. This is one of the most straightforward fixes, as it is quite obvious – simply don’t expect your jack to do something that it cannot.

Check the Hydraulic Fluid Level

When it comes to floor jacks, car enthusiasts need to be especially careful when it comes to the hydraulic fluid level. Both extremes can cause problems: if the fluid level is too high, the jack won’t function properly, and if the level is too low, the maximum height will be significantly lower. The fluid level should always be within the recommended threshold, neither more nor less than what’s needed.

To check the fluid level on a floor jack, take off the fill plug and check the chamber for the oil level. Different jacks may work differently, so make sure to check the specs in the owner’s manual.

Remember that different jacks may use different hydraulic fluids, so make sure to check in your jack’s owner manual the required fluid type and viscosity. Lubrication prevents corrosion and potential future breakdown, another reason why you should pay attention to the products you buy.

Always remember to never use compressor oil for jacks: Compressor oil doesn’t have the necessary additives and is likely to cause seals to leak prematurely. If you really need a quick fix, you can always use automatic transmission fluid as an alternative, but make sure to completely drain it and refill with recommended hydraulic fluid as soon as possible.

Bleed the system

Don’t let a small leak ruin your day! Follow these 3 quick steps to bleed the system for the car floor jack.

If you want to use your car jack properly, you need to bleed the system. Air can get trapped inside a lifting device, and when this happens the air bubbles will stop it from working properly.

To fix this problem you’ll need to bleed your system by following these three simple steps:

1- Turn on venting gas cap if necessary;

2- Remove oil fill screw/place a hand under the vehicle as described above in step 1 (you may want to wear protection);

3- Return valve back into its original position

Once all outgoing flammables have been vented away first before doing so! You should see that any leftover valves are pushed outwards again making sure there is none remaining stuck between two surfaces preventing free movement within the system.

How, on the other hand, did air bubbles get into the system in the first place? One of the most common causes is a low fluid level. Air can also enter if hydraulic fluid leaks out. As a result, you should follow all of these procedures and check for leaks in the jack as well as ensure that the fluid level is correct.

If the level drops below normal, add more liquid. If you think it might be because to insufficient viscosity of the hydraulic fluid, drain and replace it with fresh new hydraulic fluid.

Inspect the Tightness of Release Valve

It is important to know that the jack will not hold pressure if there are any leaks or damage in it. You should always make sure your release valve and handle pump correctly for it works efficiently, but also check tightness before using as well since this could be an indication of something wrong with either one (leaking). If everything looks good after adjusting them appropriately, then you can go ahead and use your floor Jack without worrying about failure!

Maintenance and Servicing

A floor jack is essential for any vehicle. The floor jack is important because it enables users to lift or move cars with ease.

How would you like to be a pro? This short three-step guide on how to service your car floor jack in an efficient manner will help propel that goal forward.

First, you should apply premium lubricating oil on all movable parts. This helps ensure the floor jack runs smoothly and effectively with minimal friction

Next, you should make sure that all the hinges and wheels are lubricated which helps to ensure your car floor jack works efficiently

Finally, make sure that when moving your car around with your Jack, do not hit any objects such as curbs and walls which could damage the device.

Perform an Overall Checkup on your Vehicle

Car owners should perform an overall checkup on their floor jack before using it for a job.

This is because there are times when the jack might leak oil or have broken parts. The unit must also be inspected in its extended and retracted positions to see if it’s working properly.

Inspecting the ram of the jack will show if there are other issues that need to be addressed, such as rusted pistons.

When possible, apply lubricating oil to the movable parts of the unit to ensure that everything works properly.


1- Are hydraulics jacks repaired easily?

If a hydraulic floor jack is not operating properly, it can be repaired quite easily with basic tools.

2- How do you fill a floor jack with hydraulic fluid?

To fill a floor jack, you must fill it until the fluid just covers the inside cylinder.

3- What type of oil for hydraulic jack?

ISO 150 and 8W32 Hydraulic Jack are the commonly recommended types. These oils have most of the properties mentioned, with minerals being at their core to provide anti-rust protection against corrosion in harsh environments like machines or equipment that touches earth – something we don’t always want happening!


Let’s take a quick look at what you can do to avoid any potential problems with your floor jack and how to repair a floor jack that won’t hold pressure.

First, make sure that the jack is in working order and not damaged in any way before using it for lifting or lowering heavy objects.

Second, when raising an object off the ground be careful never to stand directly under it while doing so—the weight of even small items could cause injury if they fall suddenly onto someone standing below them. When lowering something from high up on a ladder also try to have two people there instead of just one person handling everything themselves.

Finally, always use safety equipment such as gloves and goggles whenever possible when dealing with hydraulic jacks because they can release dangerous fluids which may contain harmful chemicals!

Last but not the least, all you have left to do is follow our simple steps, keep up on regular maintenance with your owner’s manual in hand, and stay safe while driving

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