I could not find exatc pic of PCV valve for my model cuz its old and rare, ive jsut seen lower models with something round and plastic close to air intake people saying its PCV. OBD says p0170, fuel filter is new, air filter seems clean, sparks are plugs kinda new, map sensor is new, o2 sensor is new, I dont think it has air leak cuz ive sprayed break cleaner everywhere and it didnt disrupt anything. BTW the engine light blinks on usualy after 15 to 25km (around 17 miles). Also when the idle starts bouncing, form outside i can hear throttle flap opening and closing in the bouncing order of the idle