I have a 2004 270 cdi which every morning takes about 10 attempts to start. If you drive it for a few miles then leave it for a while it starts fine - it seems to be if it's not used for 6 hours+. Local Merc specialist reckons it's the high pressure fuel pump seals and all the injectors would need replacing at the same time - about £1700! Anybody know if that's true? Thanks..