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

repair a floor jack that won’t hold pressureSometimes when you are just about to lift your car you realize that your floor jack simply won’t hold pressure?

Obviously, using it in such a condition is not just not appropriate, it’s simply too risky.

Doing so would definitely increase the risk of damaging your vehicle or, even worse, harm yourself.

This article will walk you through any possible issues you may come across as well as how to repair your floor jack.

If your floor jack is not performing well enough, then definitely, there is most probably an underlying problem behind it.

How to repair a floor jack that won’t hold pressure

Well, the best thing is that it is something you can fix quickly and conveniently as you only need a few tips to repair it.

Check the right hydraulic Oil levels

It happens sometimes that Inappropriate oil levels could be higher or lower than the recommended may make your floor jack fail to function properly. Please note that the wrong oil levels might as well lower your Jack’s capability. In order to check Jack’s oil levels, first of all, you have to take off the fill plug from the Jack and then peep in its chamber.

The recommended level is about 3/16 up to a quarter over the reservoir. Plus, most of them have manuals as well with hydraulic floor jack repair instructions that help to indicate the right level for your unit. While doing a refill, make sure that you use the best quality oil. 

Check If the floor Jack’s oil level is higher than the optimum, you must drain some of the oil. After rectifying this minor fault, your Jack would be able to build up enough pressure to lift any weight.

Check if the jack is overloaded

Sometimes, it is not always that floor jacks fail to work due to a fault. You must check your floor jack’s lifting capacity if it fails to lift a particular load or vehicle. Very few people are aware of the fact that most of the floor jacks are usually fitted with a safety overload feature, it makes sure the prevention from working if its user tries to overload them.

That’s why, Don’t forget to check your car’s weight against that of Jack’s lifting capacity, and most probably you would easily find out the cause of your Jack’s failure. Note that, A 2-3-ton capacity jack is often able to lift passenger vehicles or light-duty trucks

So, if trying to exceed a jack’s capacity stops it from lifting and also stresses it. This results in a reduction in its quality, which definitely renders this entire process dangerous for you as well.

Expel trapped air

In some cases, the floor jack fails to hold pressure due to the presence of some air trapped inside. Fortublety, you can solve this issue through bleeding. In case if you are don’t know how to bleed a floor jack, you just need to place the unit’s valve in a retracted position which is, anticlockwise usually of its handle. After all, this, ensure that you replace Jack’s oil fill screw and then try to use it again.

Another reason that also leads to your floor jack’s failure might be the lack of oil in its reservoir. If this is the case, some air starts to build up inside the unit, which leads to the prevention of the jack from lifting. An extra handy tip is that you must try not to use different types of oil such as brake oil or motor oil as it could seriously damage the interior parts of your floor jack.

Check the release valve

You can indicate this problem very easily, If the saddle is correctly positioned and the handle of the Jack is pumping properly but still find the hydraulic Jack not going up, the issue is in the release valve’s tightness. 

You must have a look at it and then adjust it appropriately. If this were the actual cause of the floor jack not holding pressure, it would start working perfectly after it is corrected. It is not considered wise to wait until your jack fails. If you try to take good care of it, it will surely serve you well.

Maintainance and servicing

Like other pieces of equipment, regular maintenance of the floor jack also goes a long way to ensure that it remains working efficiently. For example, you should put some premium lubricating oil on all movable parts. 

Well, this is the most vital yet most ignored routine when it comes to floor jack maintenance. Lubrication is very important, especially on the hinges and wheels, it helps ensure that your Jack runs effectively and smoothly with minimal friction.

Conduct a final overall checkup

Now, If you have already managed to solve all of the issues mentioned above, Note that it does not necessarily mean that the floor jack is ready to work normally. A hydraulic floor jack troubleshooting is vital to consider in order to detect any other problems it may have. You should crosscheck items such as ruined parts, cracked welds, oil leaks, and more.

Furthermore, you ought to inspect the floor jack’s ram by turning it on either side. Please ensure that you examine it while in both the retracted and extended positions. So, If Jack has rusty pistons, this can lead to an underlying problem that needs to be taken care of.


It could turn out to be a little tricky to find out the real issue, but fortunately, you can take help from this article. Most of the time, the above-mentioned problems are usually the underlying cause of failure for the floor jack to hold pressure, and as you might have already realized that they are easy to solve.

For more complicated problems, it is recommended to seek expert advice or consult the manufacturer to address this issue in an appropriate way. Plus, always keep in mind the most common issues that cause jack failure are overloading the Jack, trapped air, oil underfill or overfill, and oil leak rusty ram pistons, among others.

Janathan Greez
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