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What does it mean when your gas tank makes a whoosh when you take off the cap?
does it mean there is way too much pressure in there?
do you get better mileage when it doesnt do the "whoosh"
what exactly does it mean when you hear that sound?
It means your gas tank is pressurized correctly. The woosh you hear is just the gas tank de-pressurizing, that is, matching the gas tank pressure to the ambient air pressure.
i see on lexls says that if you hear that, you need to replace the gasket, or cap itself.
my owners manual also said i need to replace it every so often too so i just wondered what it meant when i heard that (other than I need to replace the gas cap)
but when i first got the car the cap never did that, but now it does for the past 2 months or so the "whoosh" has gotten stronger, so i thought that was a sign of needing to replace it.
so what are the actual symptoms of needing to replace the cap?
its just ur gas tank being depressurized. in most jobs requiring you to do anything with fuel, it tells u to depressurize the tank by unscrewing the gas tank cover first.