I was just wondering if its normal to get a whoosh of air coming out of the gas tank when the gas cap is removed after driving. Mine used to do this, but notw it doesnt anymore... what does that mean?

 

the "woosh" of air is normal, and the lack of a "woosh" is normal, it just means the check/ cut valve has reached it's preset pressure/vac limits and has vented it for you...

 

this also assumes your gas cap vapor-lock function is working like it should...if so equipped...

 

Well since my car stopped doing the "whoosh" i am having problems starting my car. Flooding? Lack of fuel? i think maybe they can be connected?

 

Hmmm odd.. that last post by Diku was actually posted by me, but somehow i was logged onto diku's username from MY computer? I dont get it....

 

This page explains how the whole system works:

http://www.geocities.com/huguesdc1/evapcrank.html

There are test on FSM for both purge valve and check-and-cut valve.

The purge valve is a very easy check ... might be stuck open and allowing blow-by-gases and fuel vapors into the intake tract all the time.

Hugues -