An overlooked technique for diagnosing bad engine mounts. Just doing the "rocking test" does not always show the problem!! An engine mount that has gone bad will begin to exhibit a clunking sound. This sound will be most noticeable when putting your Focus in and out of gear, when the engine shifts, as well as when you accelerate or de-accelerate abruptly. This clunking comes from the mount being worn and having enough play to move when the force suddenly changes. While your Ford Taurus’s engine mounts can last the life of the entire vehicle, it is possible that they will go bad. Vibration and a clunking sound are the two most noticeable symptoms when driving the vehicle. There are plenty of visible signs as well. Engine mounts connect the engine to the frame of the Taurus. Pop the hood. 2. Locate the motor mounts. It's best to replace them all now, as if one has failed, the others are likely showing wear. Also have a look at engine and accessory clearance to the firewall. Keep this in mind later, as you don't want to raise the engine enough to cause other damage. 3. While your Hyundai Elantra’s engine mounts can last the life of the entire vehicle, it is possible that they will go bad. Vibration and a clunking sound are the two most noticeable symptoms when driving the vehicle. There are plenty of visible signs as well. Engine mounts connect the engine to the frame of the Elantra. The engine is mounted on the front mount, front stabilizer, top stabilizer, and in the rear, there's a shaft that runs through the trans case, and out each frame side plate. The shaft holds the trans/engine, with vibration isolation through the two end rubber bushings. What he's insinuating, is that on inspection, the shafts push to the rear of Sometimes, albeit rarely, the engine mounts you purchase from the manufacturer can be worn/defective. Be on the lookout for any service bulletins to determine if the mounts you’re purchasing have been recalled. 3. Age/Stress. Nothing lasts forever, and this is true for engine mounts, as well. Engine mounts go bad due to age and stress. One other thing to look at is when the truck is in idle and in park look underneath and see if you can see the motor moving. That is another way I chased it down. Engine was moving but just barely and then by the time I got the the Transfer Case you could really see it. Just to help. Engine mounts typically last 60,000-100,000 miles, but can fail prematurely with aggressive driving, outside storage, dry climates, and traffic collisions. Some manufacturers specify an interval to inspect the motor mounts. When the mounts look cracked, are beginning to separate, are leaking fluid, or allow excess movement, they should be changed. In this video I show you how to install BMR adjustable motor mounts on the 5th generation mustang (S197). This process should be very similar to the next gen lLPMrVC.