Hi Max
After posting that item I noticed its dated, I think, 2002 so I would think that information doesn’t apply any more but worth a try I suppose.
Apparently my soon to be delivered VW has one of these petrol filters and there are no reports of any problems with them so I think its a KIA problem with there sensor not working properly more than a problem with the filter but I know what it is like when you have something slightly wrong or intermitted and explaining to the dealer to do something about it.
I had or should say “have” a slight problem with my car (over 4 years old now) where it constantly pulls everso slightly to the left and took it back to the dealer with just a few hundred miles on the clock to be told its within the limits and then they babbled on about the camber of the road that I replied “do you think after nearly 50 years of driving I don’t know about the camber of the road”. Still like it to this day after 2 x MOT’s and 4 x services, but what can we do.