Mk2 Focus 1.8 Tdci Starting Problem After Fuel Filter Change

[Stoodz]

Bit of a story here..... I changed the fuel filter on my mk2 1.8 tdci, bad idea. Wasn't till the end of the Haynes manual guide that I realised I need a primer. A roadside guy came and he tried the usual stuff to get started including loosening number 1 injector. In the end I was towed to a local garage and he used a primer and it started. My wife did a 250 miles round trip and then parked the car outside the house. The next day I was met with a road full of diesel. I took to a mechanic mate and he noticed that injector was pouring out diesel. The roadside guy hadn't done it back up! My mate tightened it back up and it started up great and I went and put diesel in it and drove it home. Next morning it wouldn't start! I got it towed to a ford dealer and after 3 days they have come to the conclusion that the injector he loosened has a fault and needs replacing!

Now I have seen stories on here and other sites with similar problems where people chuck money at the car and doesn't solve the problem. Apparantly their is no air in the system and the fuel filter is a ford one. The mechanic says fuel is getting every where it should.

Any ideas or is a new injector the only way???

Thanks.