1984 1.8 pushrod smoking

[MuddyThunder]

So here is a new one for me...the car smokes only when decelerating not when accelerating its got a Webber carb and didn't smoke prior to the car delete but after it got deleted it smokes I noticed with the air filter off the white pcv valve has a steady mist of oil when revving it up...but doesn't smoke...but when you choke it out it smokes...not sure what's going on I'm hoping the motor didn't get messed up...the reason the cat got deleted was because it was plugged up...any help is appreciated I just changed the filter and pcv valve today..anyway thanks!