Slight knocking noise!

[dogg1210]

So drove home tonight and parked car up went out 30mins later and a puddle of water on the road under drivers side headlight area.  Started car up and let engine run temp gauge sits at normal popped bonnet and can hear a knock / rumble noise thot it might have been water pump as sounds like it's from that area but not sure if it would knock.  My luck it'll be something big!  It doesn't make the noise constantly 

[dogg1210]

Just looked at some videos of failing water pump noises and sounds the same so I'm hopeful it's that 

[ickis86]

lma's?

[dogg1210]

It sounds like it's coming from water pump,  can't get it looked at coz am working 13hour shifts 7 days just now 

[dogg1210]

Well it seems to have stopped now think it might be my air con 

[dogg1210]

Well found out the night that it was the a/c cut the belt and the noise is gone going to remove it at weekend