no i turned the ball valves off which makes me think its something more? i dont know if that more severe angle in my heater hose is the problem or if the whole coolant filter is just coinincidence and just over shadowing the inevitable (head gaskets) or what. Before i could turn the ball valves off and it would quit so i just told me self no big deal if i couldnt figure it out i would just remove the kit or run it with valves off. When i got home i let it idle for about five min and coolant slowly started bubbling back up into my degas bottle till it was like 1/4 in below the low mark. Then i took the cap off just to see what happened when i relieved the pressure and nothing, no pressure or anything...just set there and idled with no issue or problems.