Hi, I had my cambelt done

and the garage discovered there is a leak from the back area of my engine

. They could not locate it because of the build up of oil and gunk on the area

( though they think it could be from a pipe ruuning up the back of the engine, in at the bottom and top. They have advised me to have the engine steam cleaned so they could trace the leak. Any ideas how best to go about this as nobody in cwmbran seams to be able to get the underside of the engine done. I would have a go at it outside my house but don't want to mess up the street and upset all the neighbours (I'm already leaving little puddles of oil

) Any body know somewhere around the Newport area that could do this for me. I don't want to have a go at fixing the leak and finding out that it is something else
/