Problem with a Peugeot 1.9D engine

Hi, I have a 1.9D boxer to which the cylinder lid together changed. Now to start it takes a long time, the more it takes the longer, as if it sucks air in the circuit. I do not observe losses anywhere and change the abrasadera of all the hoses, did anyone know what can be? Sure is some pavada, but I don't know which one. Thank you very much

It may have the gasoil pipe air ... Fix yourself, you leave it for a while if the pump return is emptied ... or if after a while to open it, stop it again with a canoe of a loose injector and see if Gasoil arrives immediately ..

Look loosen the return of the return and tasting it until Gasoil came out, now it starts well, the only thing that has some failures until the molector takes a few times that it has more air in the circuit would have to purge it from somewhere in particular?

Hello, you will see a piricor in the diesel filter that is the plastic sterior with four ayen screws in the upper cover, because just below 4 it carries a pothoger
, did you put it on measure? Greetings