Peugeot 206 lubrication problem

Hello everyone, I have a lubrication problem with a Peugeot 206 I arrived with the oil pressure witness on the manometer and the pressure was 0 we lowered the pump to check it and we were worn but we changed it but so much heating the oil the oil is lowered the pressure again changed the oil thinking that I had viscocity problems if someone has happened to it is before it would appreciate its attention. Had reheating problems or anything similar .. GRACIAS

LOW to 0 and when do you accelerate?
I have had several problems about the oil. But chatting in a friendly rectifier there are vehicles that regulate in 0 practically and when you accelerate in those cases according to them there is no problem because lubrication exists.
Another case the oil filter was very bad like that I put one of a known brand and it was perfect.
And in another I arrive with the witness of the poorly made oil when he warmed herself, she is seen and she was extended in the witness, the witness changed it and ready.
In other cases, the muddy of camshafts are always wearing more than anything but this vehicle does not have so many kilometers although a factory failure can be.
greetings

Friends Thank you for your attention. The problem was quite simple in the oil filter there is a valve that at the time of mounting the filter seals the return the filter had broken the legs that made the valve seal and that is why the pressure did not upload another filter and the problem was solved thanks ................

Hello, first of all I hope and vein this; The problem that my Peugeot 206 1.6 2009 car has is very similar, I started marking the witness Stop and the oil symbol; that is low oil pressure; The oil pump has already been changed, the filter, the oil (appropriate instead of occupying total quartz 5w40, 5W20 synthetic castrol is placed). They have also been reviewed, the strain and rings of the connecting rod nothing presents wear or dirt. I took it out of the workshop at noon but at night the witness scored again.

What do you recommend ????

Cordial greeting, I am having the same problem in my Peugeot, I would like you to help me see what happened to your car and how it is fixed ... Thank you for your help.