Use this protrusion to depress the small pin with a round head that’s inside the valve stem on the wheel. The tip of the gauge has a small protrusion opposite the flat face used to check pressure. If you put too much air into your tire with the compressor or you found that your tire was well above the recommended pressure when you originally checked it with the gauge, you’ll need to remove air. Once you reach the recommended amount, you can screw the valve cap back on and move on to the next tire. Check oftenĪs you’re airing the tire up, frequently re-check the pressure using the gauge as described in step four so you don’t overfill your tire. If you hear sharp hissing sounds, this means the compressor tip isn’t seated right on the valve and air is escaping out the sides instead of going into the tire. You should hear the muffled sound of air entering, like the noise of a balloon when you are blowing it up. Fit the tip of the “pistol” over the valve, and pull down the lever to start the flow of air into the tire. At gas stations, compressors are often fitted with a tip that looks somewhat like a pistol, with a “trigger”-a lever similar to the ones fire extinguishers are equipped with. If your tire is low, you’ll need to air it up with the compressor. Air from inside the tire will rush into the gauge and push out the indicator rod (or move the needle on the dial) to show the tire’s current pressure. If air is hissing out around the edges, adjust the gauge until it forms a seal around the valve stem. You need to fit this face firmly over the top of the stem and push down. The tip of your gauge has a round, flat face on one side with a smaller round protrusion inside it. Unscrew the cap and save it in a safe place so you can screw it back on later. Now that you have your tools and you know the right pressure, find the valve, which is a little tube poking through the wheel (the metal part the tire is mounted on). As you can see, there are plenty of reasons for maintaining the right tire pressure, so let’s take a look at how to check your tire pressure it in 7 steps. It’s safe to say that incorrect tire pressure is not going to do wonders for your bank account. Under-inflated tires also reduce the gas mileage of a car or truck. In addition to the safety concerns, tires with the wrong amount of air in them are likely to wear out much faster than those with the correct pressure, so you’ll have to shell out money for new ones much sooner. Over-inflated tires are also at greater risk for blowouts, and they can cause your vehicle to lose traction. If your tires are under-inflated, your vehicle’s handling and braking could be thrown off, and also the sidewalls could break down, leading to a blowout. Since it is actually the air inside your tire that bears the weight of your car, getting this aspect of maintaining your car right is key. Tire pressure is the amount of air in your tire, which is usually measured in pounds per square inch (PSI).
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