Hello,
Sorry if this topic has been covered before but I've been searching for 45 minutes and haven't come up with anything.
Our 92 LS 400 has a lot of pressure (enough that it hisses for ~30+ seconds and would blow the cap off if I spun it all the way loose) behind the gas cap when I remove it to fill up. Is this normal?
I've just noticed it because I've been driving this car due to the high gas prices, but my wife says it has been doing it for a long time.
Thanks,
Levi