1994 Toyota Celica Car hessitation/Burning oil

This is a long story, I will try to keep it as simple as possible for no confusion. :)

My car has been burning oil for quite some time now, quite a bit actually (dependent on my driving, about quart a week). It happens alot as far as I can see visibly (blue smoke), on start up(engine cold) and on like a hill (excessive gas pedal, I have a standard)
I have replaced alot on the car (spark plugs, wires cap rotor, PCV valve, intake, many others feel free to ask, if you think it may be the source of my problem, but I think the problem is internally)

My car has no check engine light, and no stored trouble codes. About every 2-4k miles I have! To replace the spark plugs because cylinder ones spark plug becomes far too fouled, and the engine miss fires. I know the feeling of it miss-firing from past experiences.

But the last time I replaced the spark plugs cylinder #3 was fouled out as well. This was about 1k miles ago. I recently have been driving and anything above like 20MPH with ANY excess in gas pedal pressure (I am 18 but I DO NOT slam the gas I love my car, any thing above like the slightest pressure will cause this) the car will like sputter, hesitate, "knock", jerk, its a weird thing to experience.
This feels nothing like my old spark plug being fouled out and the engine miss-firing. It is like a total loss of power.
I think it may be the piston rings are going in my car, or maybe something like the valve seals?
Thanks to any one who can help out here. Please feel free to ask me any questions