Quote Originally Posted by Erick Chavez View Post
Just recently nagpalit ako ng fuel pump kasi me tagas na sya, tapos mga ilang araw napansin ko pag binubuksan ko yung gas cap meron malakas na preassure akong nadidinig, hindi ko lang ma identify kung pahigop ba or palabas yung preassure, yung gas cap mga sir is mukhang sealed at may rubber o-ring sya, wala ding butas, normal kaya yung pressure po na yun? thanks po...

=> KIA Pride GTX 2000 Model Manual
when i read up on auto literature here, i get the impression the gas tank is "pressurized". maraming nagsasabi na pag bukas ng gas tank cover ay may maririnig na tunog ng hanging lumalabas o pumapasok.. now, i grew up knowing gas tanks have a breather tube, whereby pressure in the gas tank is equal to pressure outside it. so i am now also confused..
anoba talaga, mga koya?