Many things fuel injector service
Brake repair takes the skill of a qualified professional who has done several brake jobs. Having a back yard mechanic do a brake repair for you is not safe. Also, because of safety concerns, it is best to have a professional do the brake repair rather than yourself. It can be hard to do a brake repair and it usually takes a lot of time. A brake repair job requires special tools, and usually requires someone who has advanced knowledge of the brake system and its components.