Ahhhhhhhhhhhhhhhh Houston we have lift off!
I tried to Prime it....Turns out whoever used to own it decided to drill a hole in a part of the pipe work... once I covered that (or submerged that part underwater too,) all was well!
It's silent as a mouse in the night and is sucking like a good'en!
Thanks everyone for the input.
Rob C I'll drink to that!