If your brakes are beginning to act up, then you probably have problems with your vacuum check valve. This particular component makes use of vacuum pressure from the engine in order to increase the amount of pressure used for the brakes. The pressure in the booster is regulated by the check valve. So if this component breaks, then the brakes will not receive the sufficient amount of pressure. Luckily, all you need to do to get your braking power back on track is to replace your vacuum check valve with a brand-new one. Changing out your busted valve for a replacement shouldn't be a pain in the neck; in fact, you'll be able to do so by yourself and in little to no time. So just follow the steps listed below, and you're all set.
Difficulty Level: Easy
Tools you will need:
- Protective gloves
- Screwdriver or wrench
- Replacement check valve
Step 1: Wear gloves before getting started. This will certainly protect your hands during your DIY process.
Step 2: Pinpoint where you check valve is. This component is typically located where the vacuum line of the engine and the booster connect.
Step 3: Remove the clamps connecting the vacuum line to the check valve. Then remove the vacuum line itself.
Step 4: Remove the check valve using a screwdriver or wrench. Using the handheld vacuum pump, apply 15-20hg of pressure to the input end of the valve. If the pump indicated any pressure loss, then that's a clear sign that the valve is faulty.
Step 5: Install the new vacuum check valve onto the booster and reattach the vacuum hose to the check valve. If necessary, use clamps to hold the valve/hose in place.
Step 6: Start your engine and check the brakes for good pressure. If the pressure still feels wrong, then it's possible that you may have a broken brake booster. If everything checks out OK, then you can put this DIY job in the books.
Always refer to your owner's manual before beginning any repair work. If you seem to be lost in the middle of your repair, then back pedal and consult a professional mechanic.