coolant loss

[phil9560]

Hi all.I wonder if anybody can shed light on my problem.I'm losing coolant from my 95 Sprinter 312D.There is no obvious source but it is dripping from behind the alternator.The general opinion seemed to be the water pump (located above the alternator) had failed and was the source.However we've replace the pump and I'm still losing coolant.Has anybody any ideas ? Thanks for reading

[Whosdis]

I would suggest running a UV dye in the system for a couple of days/a week or so. Then, using a UV light or a blacklight, check and see if you can spot the source. It may also help to pressurize the system.