How Do Motor Mounts Break?
Introduction Motor mounts keep the engine in the engine bay of a vehicle. All vehicles use motor mounts, whether the mounts are made of a soft material (rubber or rubber-filled oil mounts) or a hard material (steel). Motor mounts come in two pieces: one piece attaches to the engine, which fits into the bracket that is bolted to the frame of the vehicle. The metal mounts rarely break, and are usually used for racing, because they contribute to a rough riding vehicle. Aging and Use The most common reason for a broken motor mount is aging and use. The rubber is susceptible to dry rot from the constant temperature changes in the engine compartment. This process normally takes many years. The combination of temperature changes and the stress put on the motor mounts when the driver puts the vehicle in gear or takes off from a stop wears the rubber out. Oil-filled motor mounts break for the same reasons, but also might eventually leak oil through the dry rot. While the mount might not look br
