Wher is gasoline filter ???????

They dont have one...

permant jobby on the end of the fuel pump I would reckon.

MK2s have a filter just in the tank im sure..

I dont know about the punto but a lot of cars have the filter under the rear seats, theres a panel you can remove to access it.,.,.,

thats where the fuel pump sits, in a big white plastic plug thing. sometimes the o ring seal can perish and your car stinks of petrol