207cc got me stumped

[Tiberius]

Hi guys. I have a '08 Peugeot 207cc and I am getting a misfire on one cylinder, EML and anti-pollution warnings and the car keeps going into limp mode. I have recently had a new timing chain, injectors, plugs and coils fitted along with a repaired ECU but the problem is still there. The garage cannot figure out what the problem is. I have been told it is probably my high pressure fuel pump but why is it only a misfire on one cylinder?

Any help would be much appreciated.

[xantia_v6]

Can you confirm that the problem started before the timing chain was replaced?

Exactly which version of engine?