AOA Mr. Murtaza,
I have doubt on PCV valve as well, let me share car history whom i bought from. Car used in Company it was maintained from Honda till 2019 then company start maintain from local workshop. Car condition , body is showered not major or been in accident , interior is genuine, even every single plastic is there. original allow rims, coming on engine , engine is not open but head seems repair or head seals replace, as it was open before as per my mechanic. car run and perform excellent not a glitch in driving. the issue i found after driving since Jan till now is there is carbon deposit on silencer , after bought i went through all the tuned it required as i need fuel efficient in city drive like 12 or 13, but it is still giving me 10 with ac. when sometime where it require to hard accelerate it consume fuel a lot.
another issue is on drive mode it do not change gear from 3 to 4 until i release accelerate it come down and shift to 4 , on steermatic mode it do well. i had visit to gear person near Liaquat national hospital area, specialist checked he said it good. ab chala chala kr adat pr gayi hai.
i have only concern with fuel carbon , where i should i used genuine plugs or original plugs of NGK - BKR6E - 11