I have an Antioplution Fault on my 307 1.6hdi estate (2005). It runs OK until I accelerate hard, then the car either goes into 'limp' mode or the engine stalls altogether. I have also noticed an exhaust smell in the car when standing in traffic or moving slowly. I checked the injectors and found that the seal on the third injector is leaking. I have booked it into the garage to have the seal replaced. Could the two issues - the antipolution fault (limp mode, stalling) and the leaky injector seal be related?? Would be nice if they are!