Help needed?

hi recently bought a tdci 130 6 speed after a week i had to have a new clutch and flywheel fitted its done 114,000 but had new engine and gearbox at 72,000 now needs wheel bearing i did take the egr valve off and clean it yesterday and it was thick with black cr*p not sure weather or not modding and engine this tempromental is a good idea? Any ideas?