Home Forums Cars 브레이크 문제 도와주세요. 브레이크 문제 도와주세요. Name * Password * Email 80% chance it's air trapped in brake lines. (or too much moisture resulting in water vapor forming when hot) Flush brake fluid. Make sure you do this properly - many shops 'fake flush' by just siphoning out brake fluid reservoir without bleeding brake lines. Watch whether mechanics actually perform bleeding at all 4 wheels until new, clear, fluid comes out. Demand moisture test on new brake fluid and don't leave shop until test comes out right. I agree to the terms of service Comment