cold start gas smell from the vents ('05 cavalier)

[themadness]

i couldnt get any answers on the jbody or clubcav forums so i figured you guys could help a former beretta owner out.

my 2005 cav gives off a strong gas smell when its cold in the mornings and it comes through the vents. my dad says it's most likely a line and i have read the fuel pressure regulator could be going bad. i pulled the hose from the regulator and there isnt any leak (that i can tell anyway).

any of you guys have any experience with a problem like this or can give me an idea of where to start?

thanks for having your s@#t together beretta.net!

[3X00-Modified]

Turn the key on and let the pump prime when cold... Look for any leaks in the bay such as around the injector o-rings or any lines. If your getting a smell through the vents it should be obvious enough of a leak. Bad regulator will just suck fuel into the engine via the vac line and make it run stupid rich.

[themadness]

any reason why it would do it only when its cold? brittle lines or expansion due to temps?

[themixer]

there has to be a leak of fuel coming from somewhere, prime the fuel system and stick your head under the engine hood smell around. i have a feeling its somewhere on the top end as its being sucked in by your hvac system

[3X00-Modified]

Expansion yes will cause that to go away when warm.