Inside Smells like gasoline Only when speed 65+mph and no AC
When driving on Freeway, 65mph+, if I don't turn on the AC, inside of the car will smell like gasoline. I need to open the window to not die inside the car lol.
Doesn't happen if go under Freeway miles, turning on AC will reduce the smell.
Not much Mechanics fix MB around me, don't want to go to the dealers.
Changed glove box air filter, don't see gasoline leaks from just looking under the hood, maybe deep down, idk.
Also, should I replace the valve cover if never been replaced? Reasons?
The car had codes saying: Right Substitute Light On and Right Lamp and Left Fog lamp something, but when I look out, nothing was wrong.
WHAT DO I DO?!
Guys plz help me out, just got this car half year ago, new to this community.






