oil pressure & oil leak damn 7m!

[aamt07]

Okay so I have replaced the O-ring in the CPS. The oil leak has seem to stop but there were 2 reasons I wanted to replace the O-ring. 1 of course was the oil leak the other was smoke would rise from that general area. I thought ok its because of oil leak. Now when I start the car, let it run and warm up everything seems to be fine, until I turn the car off once I trun car off it starts to smoke in that area and it dosent smell like oil it smells like plastic burning. I checked inside of the dust cover to see if any oil leaked into CPS and theres nothing also thought the reason why there was no smoke was because of the fan turning on blowing the smoke to back of engine i used a red laser to see if i could see any kind of smoke at night time and there was no smoke. Anyone have this problem at one time or another? Or know what it could be?

By the way from start to finish it only took 2 hours, and i was taking my sweet time with it. rather easy fix!