Iv just put engine back 2geather it's got twin fans alloy rad and Bailey header tank when driving the temp dosnt get to hot cus the fans always seem to b on but if I pull over and turn the engine of you can hear bubbling in the pipes so let the cap of and steam and water comes out then settles down I thought there myt b air in the system so iv gone for a couple of short journeys and still the same any ideas