i have a durango r\t
2006-10-01 17:48:10 · 6 answers · asked by derec13138 1 in Cars & Transportation ➔ Safety
because your gas take is pressurized by your fuel pump that's sitting in it. it needs pressure to push the gas to the engine.
2006-10-01 17:52:35 · answer #1 · answered by mustang656 4 · 0⤊ 0⤋
The reason you hear pressure being released is because the gas tank is part of the EVAP system. In the old days before emission controls gas tanks were vented to atmosphere were the vapors from gasoline would be let go into the air. These vapors are called hydrocarbons and have been found to damage our atmosphere so they are no longer vented to atmosphere. Your car has a charcoal canister that hold these vapors until it is running again, then they sent into the intake manifold and burned. Your car runs diagnostic tests to make sure the system is sealed and these tests and of course the vapors increase the pressure in the tank, then when you open your gas cap..... PSSSSSt.
2006-10-01 19:03:33 · answer #2 · answered by pbherbie111 1 · 0⤊ 0⤋
Fuel vapors can expand and contract inside a fuel-tank - especially on hot days...it's not a totally bad thing, but if you ever find that you are having trouble starting your truck when the tank is low, you will be having a vapor lock problem I think. Two things you can try: First, keep your tank as full as you can so that you minimize fuel/air expansion, and replace your gas cap. On top of that, most fuel fillers (the tube that goes to your gas tank) has a vent tube there - it might be clogged with sludge or some other debris.
2006-10-01 17:51:56 · answer #3 · answered by Fun and Games 4 · 0⤊ 0⤋
THE PRESSURE IS THE ACCUMULATIVE GAS DISCHARGE PRESENT IN ALL GAS TANKS. MOST RECENTLY CAR MANUFACTURES HAVE STARTED TO UTILIZE THIS PRESSURE AS A MEANS OF KEEPING THE FUEL IN THE LINES DURING REST AND THUS SAVING GAS AND WEAR ON PUMPS DURING START-UP. IT IS A NORMAL THING AND NOTHING TO WORRY ABOUT. JUST REMEMBER TO KEEP THE CAP TIGHT AFTER EACH FILL UP BECAUSE YOUR SYSTEM DEPENDS ON THAT PRESSURE BEING THERE AND WILL IN FACT THROW A SERVICE LIGHT IF YOU LEAVE IT LOOSE.
2006-10-01 17:54:29 · answer #4 · answered by Anonymous · 0⤊ 0⤋
That's normal for a none vented tank
2006-10-01 17:52:11 · answer #5 · answered by Anonymous · 0⤊ 0⤋
uuhh, yeah, like they said...
2006-10-02 11:37:23 · answer #6 · answered by Anonymous · 0⤊ 0⤋