I have a 1991 Sundance Marin. It has been maintained quite well over the years and is still working! However, I am now getting small white and black 'fines/sand' in the water. I've drained & cleaned it numerous times in a row. Nothing works, it keeps coming back. I throughly clean and replace the filter and after each filling,I checked for anything in the water from the faucet, 'nothing'.
COULD SOME OF THE INTERNAL LINES BE BREAKING DOWN? If it is all PVC I can't imagine that happening. Is there a product I can use that will clean the lines for me?