Sorry I'm a complete newbie to cars, I'm trying to learn! I'm a software developer by day. I got this Copen (RHD) to play with. Needed a new turbo so I fitted that with new gaskets and all is well, I changed the radiator for a second hand one that looked like new. I've noticed a gurgling noise behind the dash when driving/ accelerating I checked the floor as per instructions I've seen to check if the Heater core is possibly leaking, I noticed the floor was damp on the Drivers side but dry on the Passenger side. I bought a bleed kit that you attach to the radiator but after around 30 mins I am still getting air bubbles they are slowly becoming very few bubbles. I have uploaded the following video to YouTube shorts... https://youtube.com/shorts/UUVIfX6w-s0?feature=share Any help, advice and insights will be appreciated thank you, Stan.