fuel purge?/ hissing sound when the cars off

[KPeeZy]

What is that sound and pressurized hose next to the fuel filter. Does it drain the battery if it stays on for a period of 8 hours??

[Zero to 300]

I've noticed that too after a hard or long drive once i turn the car off a hissing from the fuel lines and area will be quite noticable. One thing i've learned is that it is do to pressure in the fuel system, i've started loosing the gas cap and releasing the pressure and the hissing goes away and stops.

However i did it one time after quite a hard drive and let my car cooled down (TT) and when i loosened the cap it was blowing gas fumes out aggressively and almost to the point where it seemed like it was a boiling pot and for quite some time it was blowing extremely hot gas fumes out of the tank. I have no clue what causes this other than pressure build up.

[CrazedZ32Owner]

actually when you remove the gas cap it is air rushing in because the pump creates a vaccum in the tank because of it sucking the fuel and no more air can get in there when the gas cap is screwed on peoperly.... PLEASE dont try to prove me wrong by running your Z w/o the gas cap

[KPeeZy]

Im not sure... with the car off and hearing the sound i removed the cap and nothing different happened.. it then stopped after 10 seconds

[KPeeZy]

What is the car doing when that sound is present?? Is this normal??

[KPeeZy]

There has to be someone that has heard this sound and knows what fuse it's related to. Its not the egi rely. I took that off and the sound didn't stop. PLEASE HELP!

[KPeeZy]

I found the fuse that controls the problem.. its the fuel pump egi.. The fuse box located by the battery has several green fuses.. the one on the end is labeled fuel pump egi. Im going to replace it and hopefully that will solve the problem

[Chattzx]

i think it is just releasing pressure from the system mine does it on hot days after hard driving

[Chattzx]

i think it is just releasing pressure from the system mine does it on hot days after hard driving

[Chattzx]

i think it is just releasing pressure from the system mine does it on hot days after hard driving

[KPeeZy]

If you start to have problems change out the last green fuse that is near the battery. The fuse relay was sticking in my car and the mechanic changed my alternator, battery, and other small things but it was the $12 fuse that I needed.