Help Passat 2004

Hello, the case that the passat gave injector bombs you change the injector and now it seems that the cylinder in question does not have compression, I do not know if they have not mounted the injector well or what happens, it seems like a piston perforation, the case is that it blows a lot because of the oil plug Compression by the injector to the rocker cover, and now the diagnosis gives cylinder N3 What do you think? It can be the injector, the car before entering the workshop only bibaba on low then in high was going well and now it does not go.

FRIEND MISS INFORMATION, PETROLERO PASS? beaten? What engine it brings, if it is Camonrail Dinos more data to be able to guide you