My zetec seems to have a rattle at 3000 rpm ish on very light throttle. no rattles under load or off the throttle or at any other rpm!!
The tappets rattle on first startup if its left for couple of weeks which must be oil drain back through filter but this rattle seems to have started from nowhere.
Engine has done about 42k miles and was mint inside when i checked it.
Any ideas?!???