Coming to a complete stop, you notice that you have to push down your brakes more than usual. In fact, your foot is almost to the mat. That’s a problem that needs to be fixed fast. The sponginess you feel when you apply brakes means you could have air or moisture in your system. Bleeding your brakes will flush out the impurities and keep your break system healthy and crisp. It's a one- or two-person DIY maintenance project that requires a bit of coordination.
As far as any special tools, you need an 8mm wrench to loosen the bleeder bolts, two to three feet of 3/16- or ¼-inch clear plastic tubing, an empty, semi-transparent plastic soda bottle, fresh brake fluid, zip tie, and a helper. While it’s not necessary and will take extra time and tools, you can remove all four tires and elevate your car, so you can see everything better. While you may have old fluid stored, avoid using that because it could have air and impurities from when it was last used, Contaminating the flush makes the entire bleeding process moot.
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