So I know I've got a leak in the system, but not sure where, are there any common places that I should check, before I call in the specialists. I've already been to kwik-fix and they said there was a leak and could not offer any further help. In the measuring blocks of the aircon system it is also reading low pressure so will not enable to pump. Also are there any tools / sprays that could help find the leak. I've seen the stuff halfords sell and don't fancy filling my system up with gunk, I just want to know where the leak is.