2014 Kia Optima EX - PCV Valve location and removal

#1 PCV Valve location and removal. Only when heavy throttle the Kia smokes very thick. but under normal driving or just at idle, the Kia is fine. If this does not fix the problem then my next move is #2 Head Gasket leak and if this is fine well then a #3 Blow by test on both piston or a valve. Lets hope this is PCV at fault and not further damage.