Postby 3stagevtec » May 17th, 2014, 6:45 pm
Try this, fill rad, take van for a quick drive to get engine up to temp, park and let it cool down. Remove 4 glow plugs and disable fuel pump, crank starter and watch to see if water shoots out glow plug holes.. if yes, head is cracked and coolant is leaking into combustion chamber.
Safety note, stand clear of glow plug holes, if head is cracked, water will spray out.. make sure pump is disabled before cranking! (Unplug big connector near pump)