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Tire Valve Cap Stuck

Tire Valve Cap Stuck: 6 Steps To Fix

As you know, a tire valve cap stuck will come from many causes: too cold weather, dirt, or rust from the tire valve. 

It will make it difficult for you to remove the valve. So, when your car encounters this situation, how will you handle it? 

If you need an answer, please read the article below. It will provide you with a method to fix tire valve problems on a case-by-case basis.

6 Simple And Quick Steps To Fix Tire Valve Cap Stuck

Tire Valve Cap Stuck

Almost all cars today use plastic valve caps. It is pretty cheap and gives high efficiency to operate. However, this plastic cap can be affected by various factors that make it less effective. 

In particular, the phenomenon of valve jam is the most common. The cause is cold weather, road dust, rust, or brake dust. 

It makes it difficult for drivers to open the valve cover. To remove it, they needed to use WD-40 to loosen the valve cap. Here are 7 detailed steps to help you remove a stubborn tire valve cap:

  • Step 1: You need to adjust your car tires so that the car valve is closest to the ground and facing up.
  • Step 2: Use Wd-40 lubricant to loosen the valve cover. Spray it on your valve body and wait a few more seconds for the WD-40 to settle.
  • Step 3: Use a needle attachment; it will help you clamp the valve better.
  • Step 4: You need to prepare other pliers. Then, unscrew the valve cover from its original position.
  • Step 5: Fill the car tire with air, and check the tire pressure as recommended to ensure the safety of your tires.
  • Step 6: You need to use a small WD-40 for the tire valve grooves before closing the valve cap. It will help you to avoid valve flap problems in the future.

Do Valve Stem Caps Do Anything?

If you think the valve cover is optional, you are wrong. It’s small, but it’s great for your car’s tires. 

Specifically, the plastic cap will help protect the valve body and shape. Thanks to that, the air will be brutal to escape from the lid. However, if the valve cover is covered with dust, stones, etc., it will get stuck and cause air to enter the valve stem. It’s not suitable for car tires.

Recommend Reading: How Fast Can You Go With A Spare Tire?[Answered]

Are All Valve Stem Caps Green?

Are All Valve Stem Caps Green

Many customers ask this question. The color green represents nitrogen gas. 

When the valve cap is green, it will signal that your tire was last filled with nitrogen. And you will be very unlikely to check if your tire is with nitrogen or air because both compounds are colorless and odorless.

Is driving without a valve stem cap dangerous?

Driving without a valve cover will cause your tires to fail. Specifically, it will cause air leaks to appear. 

Although it happens slowly, you can feel it during the movement. Although it is not a severe problem, it will cause you to pump air more often. 

With some versions of cars, their ability to close valves is excellent. You don’t need to worry about losing the plastic cap because the pressure drop problem is almost nonexistent even without the plastic lid.

How much does it cost to replace the valve body?

The job of changing car tire valves is straightforward. You can do it without the help of a mechanic. 

To buy a plastic valve cover, you need to go to the auto parts store and choose the type of valve you need. The price of a plastic lid can range from 10 to 30 dollars, depending on the type of plastic and the type of lid you choose.

Are All Valve Stems The Same?

Almost all car tire valve bodies are the same. The reason is the emergence of a new pressure monitoring system with the abbreviation TPMS. 

Therefore, you must ensure that your tires use this monitoring system. You will then choose the correct valve stem for your car’s tires.

Should You Choose Plastic Or Aluminum Valve Body Cap?

When manufacturing car tire valve caps, the manufacturer has to research its material. They claim plastic caps are better than metal and aluminum caps. 

The reason is that the weather will cause the metal material to shrink, tightening it to the valve body. It will be difficult for the user to unscrew the lid then. 

On the other hand, plastic caps have a more minor shrinkage than metal ones. So, despite being affected by the weather, users can still use force to remove it.

In addition, the valve body is not a part that can withstand a lot of torque. It may be deformed if you apply too much force. 

It will cause a gas leak to occur. As for the plastic cap, it has a rather expensive elasticity, and almost this phenomenon will not happen.

How to get the body van and it’s crazy?

To detect gas leaks, you can check the valve stem. A little trick to help you prevent this part easily is using soapy water. 

Then apply it on the branch and around it. When bubbles appear, you can conclude that the valve stem has leaked. This method cannot be available for other locations, so you need to be careful when testing.

How to fix a stuck metal tire valve cover?

How to fix a stuck metal tire valve cover

If your tire valve is made of plastic, it can be easily remedied with WD-40 lubricant. But when using a metal valve cap, it is much more difficult to remove the valve when it is tightened. 

You will not be able to use WD-40 lubricant because it will not work in this case. 

The cause of the metal valve being stuck is mainly due to rust appearing after a period of use. 

When you find rust around your tire valves, soak it in either PB Blaster or Liquid Wrench. Drinking time is about 1 night. At that time, the amount of rust will be almost completely removed.

In addition, if the above method does not work, you will need to use a hacksaw to remove the valve. 

After that, you need to use an additional flat-head screwdriver to disassemble the remaining parts. And finally, replace the tire valve cap with a new one. The selection of metal valve caps is similar to plastic valve caps.

Some Frequently Asked Questions(FAQ’s)

How do you remove a stuck valve stem core?

To do this, you need to use sharp nose pliers. Use force to be able to remove this part. In addition, you can also refer to the detailed steps on the youtube channel. There are many helpful videos for you.

Do tires lose air without a valve cap?

Yes. Your tires will experience a drop in air pressure without the valve cover. However, its speed is relatively slow because the manufacturer has now produced tire valves with good resistance to gas leaks. 

So, if you don’t have a puncture problem, you won’t notice it until your tire pressure is low. You will feel the change.

How do you remove seized metal dust caps?

To do this, you will need to use 2 pliers. 

But which one is in the lid and 1 in the body? You should use this method sparingly because it can affect the shape of the metal valve cap.


Hopefully, the article will help you to overcome the tire valve cap stuck. With the plastic cap, you can fix this problem quickly with just WD-40 lubricant. 

But with metal tire valve caps, it is different, it will be more challenging to remove the valve cover, and you will not be able to use the WD-40. Follow the instructions at the top of the article to be able to fix this problem!

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