An engine mount insulates the Ford Fiesta 1.1 engine from the chassis and frame. The mount itself consists of a steel frame wrapped around a solid-rubber block that absorbs the vibrations from the engine before they can shake the Fiesta to pieces. Eventually, as with all rubber components, the shock portion of the engine mount will dry-rot, crack and fall apart. When this occurs, you'll notice an increase in vibration and harshness in your Fiesta. The only remedy for this is to replace the engine mount.
Drive the Fiesta's front wheels onto the car ramps. Shift into park and apply the Fiesta's parking brake. Shove two wheel chocks against the Fiesta's left-rear wheel to hold it in place.
Climb under the Fiesta's engine with the floor jack and socket set. Unbolt the engine mount from the chassis cross-member using the socket set.
Lift the Fiesta's engine with the floor jack until the engine mount studs clear the cross-member holes. Unbolt the mount from the engine and remove it by hand.
Bolt the new engine mount to the Fiesta's engine with the socket set. Lower the engine with the floor jack until the engine mount studs slide into the holes in the cross-member.
Bolt the engine mount to the Fiesta's cross-member with the socket set. Climb out and remove the floor jack from under the Fiesta.
Remove the wheel chocks and carefully drive the Fiesta off the car ramps.