Engine mounts seldom require attention, but broken or deteriorated mounts should be replaced immediately to prevent damage or wear on the drive line components. To check the mounts, raise the engine slightly to remove the weight from them. Begin by raising the vehicle and securely supporting it on jack stands, then position a jack under the engine oil pan with a large wood block in between. Carefully raise the engine just enough to relieve the weight on the mounts. Inspect the mount insulators for any cracks, hardening, or separation from the metal center. Check for any relative movement between the mount plates and the engine or frame using a large screwdriver or pry bar; if movement is detected, lower the engine and tighten the mount fasteners. Applying rubber preservative to the insulators can help slow deterioration. For replacement, disconnect the cable from the negative terminal of the battery, ensuring you have the correct activation code for the radio if it has an anti-theft system. Raise the vehicle and support it securely on jack stands, then support the engine. Remove the fasteners, raise the engine with the jack, and detach the mount from the frame bracket and engine. Install the new mount, ensuring it is correctly positioned in its bracket, then install and securely tighten the fasteners.