hi all,i called my local 4x4 specialist out to have a look at the immoberliser which was playing up on my 93' 200tdi,as allways quick look under the bonnet and he had her started,he then told me that my head gasket was blowing you could here a constent hiss in time with the engine,he has told me it will be £670 to be fixed,does anybody know if it will pass the mot with this problem if not its a trip to the scrappie for the old girl