When you're getting your car serviced, it's important to have the brake hoses checked. Most mechanics will tell you that by the time you find out there's something wrong with your brake, it's usually too late. That's why it's important to be proactive instead of reactive when it comes to your car's brake system. If you can learn to test your car's brake hose yourself, it's even better. Don't worry; it's not as difficult as it sounds.
Brake hoses usually last for about six years but it's still important to inspect them regularly. The metal brake lines are usually the ones that get the most attention but even the simple rubber brake hoses are important for making sure that you're safe while driving your car. If a rubber brake hose gets a leak, there will be fluid loss which will lead to a drop in pressure. In simpler terms, a leaky brake hose will stop your brake from working when you need it.
The first step is locating the brake hose. It should be easy to spot the metal brake lines, but you can jack up the car to make it easier. You can also refer to your car manual. By simply looking at the hoses, you can tell right away if there are problems. Keep an eye out for a chafing, cracks, wet spots, dripping, bubbles, blisters, or bulges. Make sure that they're mounted and secured correctly. You also need to feel the hoses, but make sure that the car isn't running while you're doing this. You want your brake hoses to be strong and firm but not stiff or brittle. If they're too soft, it could also be a sign of decay.
To thoroughly check a brake hose, you'll need the help of a friend. While you're watching the brake hose, have your friend pump the brake pedal to build pressure. When the pressure builds, damage and problems with the brake hoses will be much easier to spot. A good hose won't lose its shape or size but a damaged hose will swell or show other signs of weakness.
Weak or damaged brake hoses can be very dangerous for your car. Be sure to regularly test them for safety to avoid any accidents or disasters.



Resource: How to Test Your CarÂ