Re: Smeg DI409CA Fill tank
Usually it’s the ‘O’ rings that fail. Can be fixed by changing them or alternatively using extra smaller thickness ‘O’ rings to take up the slack. Add them to the airbox pipes before refitting the originals; trial and error until the airbox is a tight fit and the latch holds it down with no slack at all. If it still leaks then the venturi inside the airbox is furred up with scale – virtually impossible to clear.
Worth a try first!!
Steve.