Hi my 2.5 V6 omega CD estate devloped a major water leak from from what looks the rear of the engine , the engine was lifted slightly up and forward and the inlet removed . It looked like the issue was the coolant crossover pipe so this was removed and the rubber seal looked to be very brittle and past its best so we thought we found the issue but the seal was replaced the engine put all back together full service and new cam belt kit fitted as there was ease of access while the engine was in bit but when all fitted back and water added to the header tank the water is still comes out as quick as it goes in .
Any ideas or advice