PCV Vaulve Messed up?

I car was bogging and blow a shit load of black smoke. I dident know why so i randemly pulled the hose on the pcv vavule and BAM! It WORKS PERFECT. No more smoke and no more shaking at all! So i went to autozone and got a new pcv and dident work! The hose is sucking hard so the hose is not cloged. I think im not getting air some ware. any ideas?

what year/motor u have you gotta post that shit so poeple know

Make sure that you dont have any holes in your vaccum hoses. Because that seriously fucked up my celica. I lost around 75hp from the 100 that i had already :( , and that was my problem.

PS. i have also run on 2 cylinders before, does anyone know the cause of that. we eventually fixed it, but i want to know some causes of it.

bad injector, blown head gasket, an assload of various other things, ive heard of (and had) one cylendare lose compression so i was runnin on 3 but to loose 2?!!?!?! most likely head gasket blew between the 2 sylenders and made it loose comp