not what i want to be hearing, especially when my schrick arrives tomorrow! I'm not loosing any water, im not having any sort of misfire, im not loosing oil, i've got no mayo on my filler cap, having a job done today on my car, the garage just phoned be back to say my head gasket is on it's way out, they asked me the above questions etc.. to which i said it's fine, and has just rolling roaded in at 200BHP+ .... they say they have found "gasses" in my combusion chamber, are they talking bollocks? is there anything else i can check, or get them to check to back this up? Next question... how much