Engine Scraping Noise
Scraped Brake Rotor When a scraping brake rotor is neglected, it will cause the brake system to fail due to the separation of the rotor hat (center) from the outer web (braking surface). Additional problems can occur include the brake pad to fall out completely or the brake caliper to blow out a piston. Either condition will cause brake operation failure. Do not drive the vehicle in this condition, brake operation failure will occur. Relocate Brake Rotor Heat-Dust Shield: When the brake rotor is in operation it produces heat and the rotor is subject the road side dust that can inhibit proper brake function. To help protect the brake rotor a shield is fastened to the spindle. If this shield becomes slightly out of alignment it can come in contact with the rotating brake rotor creating a scraping noise. To check for this condition support the car to remove the wheel in question. Next, rotate the brake rotor by hand to recreate the sound. Then inspect the air gap between the brake rotor and shield, reposition as needed and reassemble.
Axle Bearing Hub Other bearing designs include separated bearings that include inner and outer bearings with bearing races, a four piece set. Separated bearings require an inboard seal attached to the bearing hub. This seal rides on the spindle to hold grease inside of the bearing hub, keeping lubrication inside of the bearings.
Axle Bearing/Race Set with Seals Check for Tire to Body Contact: The tires on your car are designed to rotate with a minimum clearance between the body and the wheel. If this clearance is minimized by the wrong tire size or suspension modification or failure it can allow the tire to rub against the inner fender wheel which will create a scraping noise. To check for this condition inspect the clearance between the tire and inner fender well. Check the suspension for spring failure or tire size to make sure the proper tires have been installed. If further assistance is needed, our certified car repair technicians are ready to answer your car questions. Also, gain manufacturer specific instructions and information by clicking - Auto Repair Manual Related Car Repair Information