OOps... Replied to old post. Sorry...

Edited July 11, 200915 yr by FastWoman

The post isn't that old... We're not that strict on such things around here. Maybe if the post was 6 months old Stephen would tell you off, but 1 month is ok.

Wonder if Eli ever worked out what was hissing?

Could this be a vacuum leak or some other sucking sound coming from the fuel evap cannister?

Well, I was originally going to suggest the vacuum reservoir for the HVAC system (Eli, the translucent white thingie shaped like a very fat submarine sandwich). However, I misread Eli's post, not realizing the hissing sound occurs when the ign is on and the engine isn't running. That brought me to suggest that he's hearing normal fuel flow through the fuel lines -- possibly with some turbulence somewhere. If there's nothing dribbling to the ground and creating ghastly fumes, it's not a fuel leak. It's also not a vacuum leak, as the engine isn't running (i.e. no vacuum). HOWEVER, Eli, if you have an engine compartment full of old vacuum lines, you probably have a few vacuum leaks. Replace your vacuum lines, and your engine will probably run much better!