Have you had it code read?. First port of call. Really sounds like glow plugs.

OK, think I can help with this one. Most likely to be plugs. No names £20 a set on Ebay. Bosch £35-40. I recommend Bosch. Dead easy to change. I am not a mechanic but not scared of getting my hands dirty. Warm engine up. Locate turbo pipe that goes over the top of the engine. Follow it back almost t...