Well since noone else added an answer, i found it myself, if anyone else has this problem its a tube that popped of at the back of the engine, its under the filter and then behind the engine, its awkward to fit back on and is some fiddly work. i did it the first time and it was still slightly maaking the noise, do it again and put it on further if this happens and then re - tighten, this should then fix the problem.
Dan, January 2009
