Why is the water in my car pressurised when reving the engine?

Thanks Steven,s. Have definately not missed a stage. Is bolts. Engine cooling system was flushed through with a hose at first and with a radiator flush after. Oil was also flushed and replaced. Is bolts. Head was not warped and compression test shows equal pressure across all cylinders. Hence my confusion. As an apprentice I believe that there was another issue which would cause this but I can't remember what that was now.

Michael
June 2012

Is it studs or bolts,if bolts you may have oil or water in holes meaning your hydroliking and need to clean holes out.or Check your torque setings you may have missed a stage andthe head may not be tightenogh and the extra gasses forcing into water ways,just re torque bolts,or head warped,

Steven,s
June 2012