Motor mount wears too quick?
Focus's from 00-05 have the problem of going through the passenger side motor mount too quick after the first change from stock. Now whether it be Zetec or duratec, if your going through them every 4-6 months, then your problem is engine/trans alignment, which is also known to sometimes cause clunking or rattling noises.
The fix for this is to, jack the car up onto jack stands on level ground, then begin to remove the battery and box, exposing the top of the trans mount, then next go over to your motor mount and expose it by removing the coolant tank by removing the 1 10MM bolt.
Then your going to want to go under the car and remove the dogbone/ torque mount from the car, this will help when trying to move the engine.
Next put a jack with a piece of wood on it, up to your oil pan, and just make contact with it, enough to hold it up for when you loosen the engine mount.
Next go to the trans side and do the same, put a jack under the trans with a piece of wood between it, and loosen the four nuts to the trans mount.
At this point you should be able to lower both sides ever so slightly, and move the engine around until the studs float inside the hole's for the motor mount, and trans mount.
Once you got it perfect, tighten the trans side down first, then the motor mount, and then go put the torque/ dogbone mount back on.
If the dogbone mount does not go back on straight, then either the motor is still not lined up good, or the sub-frame needs to be adjusted.
Note: Also check your trans mount and torque/dogbone mount out good, if it looks all cracked and dried out, it just might be time to replace all the mounts.
Hope this helps some people from going through motor mounts like crazy.