I smell gas in the car
Took car to mechanic he gave it a tune up and checked lines for leaks then said i probably smelled oil that dripped on the exhaust manifold. the next day i could still smell gas inside!
You may have a filler neck issue. If the issue is more pronounced when you have a full tank and the check engine light is on - that's likely what's going on.
The fuel filler neck is a part that is often overlooked until it's gone bad, or a check engine light prevents the car from passing an emissions inspection. (this is generally true for cars made from 1996 onwards). I've seen a fair amount of GM fuel filler necks develop leaks from rust on cars in northern climates over the age of 7. One way to determine is to fill the tank of your car with gas, leave the gas station, and park the car. Then walk around the car sniffing around for the smell. If the smell is worst near the filler door - the neck has a problem. Since the gas tank is right below the rear seat and there are interior drains in the vicinity, it isn't unlikely that the smell could work its way in through there. Or, there could be more corrosion.
If the smell is only happening when the car is cold then it is the fuel pressure regulator. I had this issue for more than a year in my 2000 grand am Gt before my mechanic saw it and fixed it. (Not his fault - mine). It's a $75 - $80 part if you buy it. + labor if your mechanic installs it.
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