i have gas odor in and outside my car. my mechanic can't find the problem
Do you get the gas smell all the time or just while car is running?
only when running after about 10min.
You could be getting gas smell from anywhere on the fuel system. I would start under the hood with the car running and just look for any wetness on fuel lines and fuel rail. Then check under the vehicle. From the year of your car my guess would be that you have a rusty fuel tank. I would pay close attention to tank and lines coming from tank.
Ive been researching this 4 awhile now and have the same car -- its most likely the CHARCOAL EVAPORATION CANISTER / VAPOR CANISTER..... this site is helpful http://www.carparts.com/nissan/sentra/vapor-canister and check out youtube https://www.youtube.com/watch?v=LVY8V- XdY5U and https://www.youtube.com/watch?v=B7EcWwlhzBM
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