Band Distribution Peugeot 406 with two cams

Hello, I have a Peugeot gasoline engine with double camshaft, they changed the distribution band and I was unstable, they took motor compression and it was 0, they disassembled cylinder head and replaced valves, the engine was put again and I was unstable, it has good compression but fails, according to the technic

Hi Vilches, it seems that everything points to a problem as a result of the change of the strap ... if compression 0 is that they were so bad that the trees opened valves "to their ball" as who says; If this happens, it is normal for valves to bend and from there they had to replace them, now with everything on, the idle is unstable ... and tells you that the band is correct, I will not trust that it is well draft the trees, nor that it has been well frightened the valves or reviewed their seats, I already say, I should pay you the destruction that has made the Change mechanic or look at your belt draft and if it is fine, to see that it has the cylinder head (broken taques, damaged seats ...) and that they do not come to you that the idle valve or other stories is evil ... An error has anyone, but they cost money. I wish you luck !!