synistershadows Posted July 31, 2007 Report Share Posted July 31, 2007 ok well i dunno if it is normal or what but it seems that whenever i stop from driving for a while my car starts a mid range whine comming from my gas tank and when i go to the cap and slowly relese it the pressure in the tank goes down the whining stops and i get a smell of gas and i can see the vapors releasing. does anyone know what could be causing this problem??? Quote Link to comment Share on other sites More sharing options...
1990lumina Posted July 31, 2007 Report Share Posted July 31, 2007 Try a new cap..seems like yours is leaking...pressure in the gas tank isn't unusual, and vapors escaping when relieving pressure isn't unusual either. That's why you don't smoke when fueling hha Quote Link to comment Share on other sites More sharing options...
White93z34 Posted July 31, 2007 Report Share Posted July 31, 2007 my car always does this if i am low on gas, never when i am above about 1/4 tank. Quote Link to comment Share on other sites More sharing options...
synistershadows Posted July 31, 2007 Author Report Share Posted July 31, 2007 yeah i figured that its just really annoying having that whine but what would cause it? the cap you think? Quote Link to comment Share on other sites More sharing options...
synistershadows Posted July 31, 2007 Author Report Share Posted July 31, 2007 mine does this pretty much all the time Quote Link to comment Share on other sites More sharing options...
Andrew Posted July 31, 2007 Report Share Posted July 31, 2007 if not the cap, maybe one of the vent tubes off the tank is leaking. Quote Link to comment Share on other sites More sharing options...
synistershadows Posted July 31, 2007 Author Report Share Posted July 31, 2007 vent tubes??? Quote Link to comment Share on other sites More sharing options...
3.1cutlass Posted July 31, 2007 Report Share Posted July 31, 2007 You don't know what a vent tube is yet you want to do this: http://www.w-body.com/forum/index.php/topic,62086.0.html Quote Link to comment Share on other sites More sharing options...
scotty Posted July 31, 2007 Report Share Posted July 31, 2007 i always thought it was the fuel pump whining, mine does it when its getting low on gas. Quote Link to comment Share on other sites More sharing options...
BXX Posted July 31, 2007 Report Share Posted July 31, 2007 A little info guys, GM fuel pumps are known for being noisy... It is perfectly normal... So long as it doesn't sound like a supercharger though Quote Link to comment Share on other sites More sharing options...
Andrew Posted July 31, 2007 Report Share Posted July 31, 2007 A little info guys, GM fuel pumps are known for being noisy... It is perfectly normal... So long as it doesn't sound like a supercharger though dis is true, but they cant make noise when the car is turned off !! Quote Link to comment Share on other sites More sharing options...
CSI_MuNkY Posted July 31, 2007 Report Share Posted July 31, 2007 I have the back seat pulled from my car right now, and all you can hear through the floor is the fuel pump running, and its brand new. Jamie Quote Link to comment Share on other sites More sharing options...
synistershadows Posted July 31, 2007 Author Report Share Posted July 31, 2007 its not so much i care when the cars running i just hate that whine that i get when i shut off the car Quote Link to comment Share on other sites More sharing options...
CSI_MuNkY Posted July 31, 2007 Report Share Posted July 31, 2007 if your getting it when you shut off the car, its not the fuel pump. I say start with the gas cap and go from there. Or like mentioned before one of the vent lines going to the evap canister could be cracked and making a leak, when you remove the gas cap you relieve all pressure so the leak stops. If you get under the car you will find 2 rubber hoses going from the top of the tank to a canister located behind the drivers side rear wheel well. Check those hoses for any cracks. Jamie Quote Link to comment Share on other sites More sharing options...
synistershadows Posted August 1, 2007 Author Report Share Posted August 1, 2007 ok next time its up i will thanx Quote Link to comment Share on other sites More sharing options...
bigdman Posted August 1, 2007 Report Share Posted August 1, 2007 I've always had a whine coming from the tank. even with my new pump. my gf's 94 cuttty vert does the same to. prolly normal but if the car is off then that could be pressure in the tank. when I'm low on feul and I pull off the gas cap it releases pressure. but I don't hear any noise with the car off Quote Link to comment Share on other sites More sharing options...
synistershadows Posted August 1, 2007 Author Report Share Posted August 1, 2007 ill try and get a vid of it next time it does it Quote Link to comment Share on other sites More sharing options...
synistershadows Posted August 3, 2007 Author Report Share Posted August 3, 2007 ok so i took a video with my cell phone of the sound thats comming when i stop here it is http://s7.photobucket.com/albums/y294/aodei/?action=view¤t=17d3b704.flv Quote Link to comment Share on other sites More sharing options...
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