Coolant problems

[simon999]

(02-25-2016 )kwted Wrote:  Ok so here is my problem, I top of my coolant to the full mark after running it goes to low. I see that the coolant comes from the overflow hose on the side of the water tank. I did an oil sample their is no coolant In the oil. The other thing I noticed is that when I take of the cap of the reservoir tank the level of coolant slightly rises.

We had one cummins n14 that had problem with coolant overflow. Coolant was overflowing out the cap. The problem was that coolant filter was never changed and the water line was blocked. I would replace filter and then see.