Thanks for the comments guys.The problem with the warrior was a blown cylinder.
It was two days before my PPL checkride which meant I had to take my test in a cessna 150(but passed ok).
The cylinder has been replaced and the a/c is back online.I feel abit anxious flying that plane again but as the saying goes"if you fall off the horse,then you get straight back on".I would be interested if anyone knows the procedure to "run in" a new cylinder?