ive just purchased a merc vito2001 model and drove to the garage then a little bang n alot off steam and water looked in water pipe split i this something to worry about ..
regards
Pipes do split. Replace. Should not be a problem, Could of been worn, rubbing against something else. Not very high pressure, but enough. Check others while you are at it.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix vans.