Well the smoke if it is from oil and it is the same as before after everything that was done

after I denue the engine I have worked about 30 min I have not yet taken it to the street because it throws a lot of smoke, especially when the accelerate is right, the silencer escape is struck etc. The new pieces are struck, this will be true how to go bad to be bad if the engine is almost like new thanks for the answers I can expect?