Oil out of the exhuast... Options

[shadycrew31]

So ive had my celi for a long time. And since the past few years its been burning oil. I dont drive it that often cause I have another car. However that cars registration is up and I dont have the money to re register it.

So heres what happening. On startup a huge plume of oil come out then no more smoke. and only on cold starts when its been sitting. I took off the valve cover today because im changing the gasket due to another leak. I also removed the spark plugs and they had oil on the threads, I looked in with a flash light and the pistons were coated with oil and other residue.

so Ive been doing allot of maintenance to cars lately mainly my other car a 91 300zx which is a huge PITA. so im thinking valve seals/piston rings? and Ive never done piston rings but If I spend more than $600 its not worth the money I can just get a used engine. I would be doing all the repairs myself. just need some guidance on what to do.. anyone have any suggestions?