Hi there i have a problem with the water pump on my 1300 felicia, there is a perfectly round hole in the water pump housing when viewed from under the car.

i was wondering if there should be a plastic or rubber bung supposed to be in the hole, obviously its leaking a lot of water. if the hole is not supposed to be there would chemical metal do the trick ??? any help would be greatly appreciated.

Sounds like the seal has gone on the bearing. the hole is an indicator.

Indeed the hole is called a 'tell tale' hole.