I have a 54 Plate 2.2 CTDi and it appears the exhaust manifold has cracked. The car has done 155k miles, but when I drove it yesterday I smelt fumes, on opening the bonnet I could smell fumes from the rear of the engine. The question is has anyone attempted to change the manifold themselves? It looks fairly straight forward, just lots of pipes to disconnect to get to the manifold. I can't seem to find a workshop manual for the car on the internet to download. Any help appreciated.