Spray bottles are sold at most department stores and online. You can also buy a leak detector kit from your local automotive store or online. Follow the directions for that kit.
Big leaks will require a professional repair.
Look for a product that says its sealant is a conditioner, which won’t clog your pipes. A sealant that has a goo texture can cause a clog. [4] X Research source
Recharging a system with a big leak is a waste of time and money. It’s best to get a professional to fix it.
Follow all instructions on the label, including additional recommended protective gear.
Sometimes they are labeled with “H” for high and “L” for low. In some vehicles, the low-pressure line port will be lower than the high port, but this is not always the case. Most kits have a hookup that only fits onto the low-pressure port, making it easier to choose the right port.
If it’s loose or comes off, try to attach it again. It’s best to select a recharge kit that comes with a pressure gauge. This allows you to easily add more refrigerant without overcharging your air conditioner. [10] X Research source
Your ideal pressure will be determined once you test the outdoor temperature. You’ll do this when you test your system later in the recharge process.
Your hood should still be up.
If it’s not spinning, then you can add half a can of refrigerant and check it again. If it’s still not spinning, then you’ll need to take your car in to a professional technician. [14] X Research source
It’s okay to round up or down to the nearest 5 degrees. [15] X Research source
Do not add more refrigerant if the levels aren’t low. This could damage your car.
Always follow the directions on your charging kit to ensure that you get the best possible results.
Discard the inner cap.
If the trigger pin doesn’t pierce the can, then you won’t be able to use the product. In the rare event this happens, you can try removing the trigger and pressing down harder as you replace it again.
If the ingredients aren’t mixed well, you can experience some clogging as you use the product.
If it feels loose or comes off, try again.
If your can has a knob instead of a trigger, you should turn the knob until the refrigerant releases into the hose. You should hear it.
If your can has a knob instead of a trigger, then you should turn the knob to close the valve after 10 seconds. You’ll probably need to add refrigerant a few times to reach the desired pressure. Take your time, though, so you don’t overcharge the system. Overcharging makes your system run ineffectively and can damage it.
If your can has a knob instead of a trigger, turn the knob, closing it tightly, before you detach the connector. For example, you might store it in a cool spot in your garage that is away from heat sources.
This is the cap you removed at the beginning and put in a safe place.
If it’s still not cold, you’ll need to take your car in to get checked by a professional.
