Megane problems 2 1.5 dci motor k9k

Good morning, I have a problem with this car, and I am already nervous, the car does not start well, and when it starts and passed the autocom gives me a combustion error in the cylinder number 4 p0304, I have changed the injector, I have looked at the cables, sung a saeta, and I danced some Sevillians ... Can someone throw some light with this uncle? because I'm already a little desperate, thanks

Check the connections and if you receive opening signal from the switchboard or check that it injects with the selfocom if it is Bosch you will surely have to encode it if you do not leave the selfocom test to encode it on the road you take a highway you accelerate it to 3000 laps and you leave it for about 30 seconds without touching the accelerator and repeat the process 4 times one by injector and self -control

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The injectors are Delphi ... the problem is that sometimes it does not start and marks that error, the P0304 and puts combustion problem ... what is the wiring is already proven and gives signal

Hello, surely, your problem is the platelets of the injections and they have a lot