Trace the hissing sound and I am sure you'll see either a cracked hose or a
loose hose connection.
Both aren't to difficult to repair! (just a lot of dismantling)
--
Ciao from Holland
AlfistaGJ (Gert-Jan)
Alfa red 156 SW 1.8 Madeno tuned (2000)
Golden Montreal (1973/4)

"HANNIBAL" > schreef in bericht
lkaboutautos.com...
> Just had car MOT'd, it passed !! but on checking the air con for me there
> was no gas and when they tried to fill it up there was a hissing from
> behind the dash. Any ideas or help for a cheap repair appreciated. I am
> pretty handy with the tool box.
>