Need a EV Trainers Help, With my EV training ON Diamond Version?

Question

Alright, So im havin some trouble EV training my pokemon. When i start to EV them I Have the item attatched, and i usually get them to catch Virus Pokerus, And i Start To EV them and it works good when they advance there first Level. Cuz they gain like +50. But thenm when i EV them again, They will only gin like +2. (Like they normally do) What am i doing wrong? I use the EV items and i sttach Pokerus? Help Please, Best Answer = 10 Points!

Answer 1

you can only EV train a pokemon once and you usually wont see the stat gain until lvl 100, Max EV training in one stat gives 52 stat points, as 4 EVs=1 stat point, and each stat can receive 255 EVS with 510 total

Answer 2

I really don't know what EV training is, so if you put a detail about EV training unless you mean the pokemon Eevee, I'll talk to you about it. So brb(be right back).