Water pump? Maybe Options

[cloqwise]

If the water pump starts to go does it start to make a rattling sound or does it start to leak coolant out? I do know it can leak when it starts to go but does this always happen? On starting my car when cold there is a metallic kind of lets say rattle for now until i can think of a better word to describe it, however its been like this for a while and from what i can see nothing is being affected. From just using your ears it sounds like its coming from the cams or alternator but i used a my ear against a screwdriver and i heard it best when i put it on the oil cooler. Havent investigated much so i was thinking maybe its the water pump as its not far from the oil cooler however i havent had any over heating problems. The sound isnt heavy enough to be something major and my friend has already had a quick goosey at it he said its not a major bearing or anything. You can only really hear it in low revs and when in the cabin you can hear it better i would say and when you pull away it sounds quite diesel'ie.

any ideas?

I'll try and make a video tomorrow

[soulshadow]

It could be the cam belt itself going bad.