when accelerating from stationary there is a noise that sounds as if there is water in the exhaust if you know what i mean. Any suggestions as to what it is and how i can solve this?

What Car, What Year, Is any other Problem Ie loss of power, When and how did it start

2003 1 litre corsa, and it was bough second hand so i have no idea how or when it started. There doesnt seem to be any other faults, just when reversing or accelerating from stationary it makes this noise

Do you get the noise when you raise the engine speed without moving aswell? If you do it may be water/air moving around the heater matrix. do you have any problems with the cooling, ie, water loss or overheating?

iasaha