Preassure sa Gas Cap

**Erick Chavez** · September 6th, 2013 10:40 AM

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

**dr. d** · September 6th, 2013 10:51 AM

Originally Posted by Erick Chavez

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?

**nivraarvin** · September 6th, 2013 11:14 AM

Same dapat ng pressure yan sa atmospheric pressure. Kung negative pressure mahihirapan kumuha ng fuel ang fuel pump. Kung positive pressure, could be fuel vapor.

**t2erns** · September 7th, 2013 11:32 AM

research nyo evaporative emission system. marami rin may fuel tank pressure sensor.

**Erick Chavez** · September 7th, 2013 11:50 AM

napansin ko kanina medyo malakas yun preassure and parang palabas sya

**alfonsomiguel** · September 7th, 2013 12:12 PM

sir erick, nung sa car namin, nag-aamoy gas sa may gas cap area. Pag binubuksan ko, wala singaw maririnig. Try ko sa iba car buksan ang gas cap, may "pressure" na lumalabas. Pinagswap ko mga gas caps (both cars are honda), lumipat yung amoy gas. So sa gas cap may problem. Incidentally may friend kami galing US, nag pabili ako ng honda gas cap (mahal kasi sa honda dito sa atin, 2k petot). Nung binigay sa akin yung cap, inusisa ko. May warning label sya na "Fuel spray is dangerous", "Open slowly". After mapalitan ang gas cap, pag binubuksan, may "pressure" na sya.

**[archie]** · September 7th, 2013 01:44 PM

Meron talaga pressure sa gas tank. Kung walang pressure, magaamoy gas yung oto kasi hindi sealed.

**SiRbossR** · September 7th, 2013 03:15 PM

Pressure o Vacuum? I've only experienced Vacuum when removing the filler cap.

**[archie]** · September 7th, 2013 03:20 PM

Vacuum sir

**jaypee10** · September 7th, 2013 04:33 PM

meron talaga i have 96 vti minsan kasi pag nililinis ko ung sa lagayan ng gas..binubuksan ko din at may pressure talaga hangin na palabas ..
natural nalang daw un sa mga may fuel pump na sasakyan...