Engine mounts are long lasting items and very rarely cause any reliability issues, however if a mount is broken or perished it should be replaced before it causes damage to the driveline. To check the mounts, lift the engine upward a little off the mounts to take the weight off them. First, securely lift the car off the ground with jack stands and place a jack under the oil pan with a large piece of wood between the jack head and oil pan, lifting the engine only slightly to free up the weight on the rubber engine mounts. As to the mounts, check for cracks, hardened rubber, or where the rubber has delaminated from the metal plates; it is also supply to split down the center. Make sure that any of the mount plates has shifted in relation to the engine or frame by using a large screwdriver or a pry bar; if it has shifted lower the engine and then tighten the mount fasteners. To conform a slow process of deteriorating, the mounts are treated by rubber preservative. For replacement, turn off the vehicle and disconnect the negative battery cable with the car well-supported on jackstands. Pop off the nut on the through bolt and the second bolt and nut that joins the mount to the frame bracket. Lift the engine up a little by a jack or hoist to that the fan cannot touch the radiator or shroud, then take out the through bolt and nut to pull out the mount. Removal is done in reverse order or installation, and the thread locking compound must be applied on the mount bolts and must be tightened.