Why can I smell gas when I open the sunroof or windows?

1997 BMW 318
136,000 MILES
Avatar
NIBS425
  • MEMBER
  • 4 POSTS
the smell of gas when the sunroof is opened and or windows in a 97 bmw 318ti. No smell of gas when windows are closed also no smell of gas outside the vehicle.
Jan 9, 2012 at 4:04 PM
Advertisement
Avatar
FIXITMR
  • ✓ASE Certified Mechanic
  • 9,990 POSTS
  • ASE Certified Mechanic
you must have external leak? any dripping on ground when parked? any smell when you leave /enter car?
Jan 10, 2012 at 6:06 AM
Avatar
NIBS425
  • MEMBER
  • 4 POSTS
No dripping on the ground. When I exit the vehicle there is no smell, also no smell inside. It's only when I open the sunroof. I stood close to the gas tank/ cap and the smell is not as strong as when I open the sunroof. It's weird.
Jan 10, 2012 at 8:12 PM
Avatar
FIXITMR
  • ✓ASE Certified Mechanic
  • 9,990 POSTS
  • ASE Certified Mechanic
must be some kinda leak or venting going on somewhere. does everyone smell it or are you sorta sensitive in that way?
Jan 10, 2012 at 8:16 PM
Avatar
NIBS425
  • MEMBER
  • 4 POSTS
Everyone smells it. It's gone as soon as the roof is closed
Jan 10, 2012 at 8:23 PM
Avatar
FIXITMR
  • ✓ASE Certified Mechanic
  • 9,990 POSTS
  • ASE Certified Mechanic
dont do it with side windows?
Jan 10, 2012 at 8:25 PM
Avatar
NIBS425
  • MEMBER
  • 4 POSTS
No it doesnt. What i noticed is that when all three are opened the smell tends to disappear after a while. When I open the sunroof on it's own, instantly you can smell the gas.
Jan 10, 2012 at 8:28 PM
Avatar
DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
An inspection of the fuel lines and vapor lines and return lines is in order.
Jan 11, 2012 at 3:34 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.