Smell gas

My car is smelling like gas, and it seems to be leaking under the car at times. The liquid smells like gas, so it's possibly a leak from the tank or seal.
Experienced mechanics share their insights in answering this question :
This vehicle may be leaking from the fuel pressure regulator; GM has issued a recall for the regulators not having a proper seal. The leaking you describe may, or may not be related to the recall. If the leak is determined to be related to the recall, then you can have the dealer tow it in and repair it for free. In either case, I recommend that you do not drive your car until the fuel leak is fixed. Have a mechanic, such as one from YourMechanic, come to you, inspect your gas leak, and recommend the best path to repair.

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Your Chevrolet Impala smelling like gas could signal a gasoline leak which can present a significant fire hazard. Fuel leaks can be hidden in the engine bay and in the undercarriage and may not present themselves as fuel on the ground as gasoline can evaporate quickly.
Your vehicle produces exhaust fumes when your engine burns gas during acceleration. These fumes are supposed to be pumped out through the exhaust pipe. However, if you have an exhaust leak somewhere between the engine and the catalytic converter, you`ll smell gas in your car.
Natural gas has no odor. Gas companies add a harmless chemical called mercaptan to give it its distinctive “rotten egg” smell.
Car Smells Like Gas – Leak in the Fuel System

Take the time to observe when you`re smelling the gas; if you notice the smell while driving and right after you`ve parked, you likely have a leak in the fuel injection line. Schedule service with our Leson Chevrolet Company, Inc.

Cracked Charcoal Canister

If your car smells like gas, but there`s no leak from the gas tank or fuel lines, it`s time to turn to other possibilities. The charcoal canister is a key part of the EVAP (or evaporative emissions control) system in your vehicle.

Bad fuel pressure – if your vehicle has as issue with fuel pressure it could lead to a smell of gas.
The smell of rotten eggs.

In its natural state, natural gas is odorless and colorless. To make gas leaks easier to detect, gas companies add chemicals called odorants to create a natural gas smell similar to sulphur or rotting eggs. The stronger this smell, the more likely it is that you have a gas leak.

An olfactory hallucination (phantosmia) makes you detect smells that aren`t really there in your environment. The odors you notice in phantosmia are different from person to person and may be foul or pleasant. You may notice the smells in one or both nostrils.
Typically, you can smell gasoline at levels that would not be expected to cause adverse health effects. Since gasoline can be smelled at low levels, the source can usually be found and eliminated.
While exposure to low levels of natural gas is not harmful, long-term exposure can affect your health. Burning natural gas produces nitrogen oxide, carbon monoxide, and methane. These chemicals can trigger respiratory problems, depression, and decrease the quality of your health.
Rotten Egg Odors

Natural gas and propane have a distinctive smell for a reason. For safety purposes, utility companies use an additive called mercaptan that gives colorless and odorless gases a smell that is hard to miss. Most people describe this smell as something like rotten eggs, sewage, or sulfur.

It`s normal to smell an odor for a few seconds before seeing the flame on the range. A gas leak smells different, like rotten eggs. A hissing sound can indicate a puncture in the gas tank and some leakage. Go outside and call 911 or the gas company`s emergency line if you suspect a leak.
Typically, you`ll need to allow your home to air out for fifteen minutes to a few hours, but the exact timeframe depends on the severity of the leak and wind conditions in your area.
An olfactory hallucination (phantosmia) makes you detect smells that aren`t really there in your environment. The odors you notice in phantosmia are different from person to person and may be foul or pleasant. You may notice the smells in one or both nostrils.
Check beneath the tank of your vehicle and see if you notice a puddle. If there is a puddle underneath where your gas tank is located, there is a good chance you have a leaking gas tank. Furthermore, this puddle will smell strongly of gas, which is another sign of a leaking tank.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

The car smells of gas, probably has a leak
ANSWER : When an air conditioning refrigerant leak is being detected, a mechanic will often use an electronic leak detector that is specifically designed to ’sniff’ for a specific refrigerant. These electronic leak detectors are also made to detect fuel leaks. I would recommend locating a mechanic that owns one of these electronic leak detectors and enlisting their assistance in inspecting an oil/fluid leak. This would be the best chance at finding the leak considering that is is not large enough to be seen by multiple people.

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What’s going on when gas is constantly slowly leaking from where the gas cap is and the cap was not under pressure when opening?
ANSWER : It is possible the tank was filled too much, that is the gas pump did not shut down when it should. Even if gasoline was not filled right to the top, thermal expansion can later cause the gas to overflow if the tank gets warmer and pressure builds. The too high level will subside quickly as all you have to do is drive 25 miles or so to lose a gallon. If you believe there is a leak or other issue, a certified Mechanic from YourMechanic can perform a leak inspection during a mobile visit.

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Soap smell coming out of car after cabin change. Changed filter the the smell is still coming. What to do about this strong smell?
ANSWER : Hi There,
As you know, your car has a cabin filter that serves to filter the air that is introduced to the cabin inside the vehicle. The best way to remove your cars interior ac odor is to use a cleaner that uses enzymes. Enzymes in cleaners kill odors at the source and completely kill the smelly substance material and therefore stopping the a bad smell. To get rid of the smell, try the following: First turn on the ac to full, make sure the “recirculate” button is not on, spray a large amount of cleaner with odor killing enzymes into the EXTERIOR air intakes that are located just below the windshield wipers, let the car run for about 10 minutes with the ac on, after 10 minutes turn off ac and spray the cleaner into the ac vents on the INSIDE of your car. After doing all this, let the car sit for 20 minutes turned off and windows rolled up. Then repeat if the smell is still in the car. By doing this you are killing the bacteria or mold in the car ac vent ducts and also the evaporator mold that may be present.

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light smell of gas – 2016 Hyundai Elantra
ANSWER : Hi. It sounds like you are getting a gas vapor odor from a fuel tank venting system. The system is supposed to store the fumes in a carbon canister, and if excessive pressure builds up, this will vent to this canister. You should have the system checked for leaks of vapor.

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I have a 2006 dodge caravan and I been smelling gas for about a month but it’s not burning alot of gas do you have any idea what i
ANSWER : It is possible that you have a leak in your exhaust system. Many times you will be able to smell gas when the exhaust system has a hole in it. The most common cause of this would be the exhaust gaskets or the muffler. I would recommend having these items inspected by a qualified professional to determine if the exhaust is the cause of your fuel odor.

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Detecting strong gas smell.
ANSWER : The EVAP system is used to prevent fuel vapors from escaping into the atmosphere. The powertrain control module (PCM) monitors this system to ensure it is completely sealed. If a leak is detected, the PCM will illuminate the check engine light. From what you describe, it sounds like you may have a leak somewhere around your fuel filler neck. However, the EVAP system is complex. Only inspection by a trained mechanic, like one from YourMechanic, will give a definitive answer.

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fuel pump replaced smelling gas
ANSWER : Hi there. Anytime a shop completes a fuel pump replacement, there are multiple ways for fuel to leak and create a strong gasoline smell inside the cabin. It’s possible that a fuel line is loose, the connection to the fuel cell is not strong (which is maybe why they used a sealant), or you have a damaged fuel line leading to the engine. This can be very difficult and time consuming to try and diagnose on your own, so you should have one of our mobile mechanics come to your location and complete a smell of gasoline inspection to find the source and make the right repairs.

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Plastic burn smell when opening driver door. Cannot smell inside cabin. Oil full, brakes ok.
ANSWER : Hi there. It is very difficult to "guess" as to the cause of a smell like you’ve described without being their to inspection the car personally. I would highly recommend having a professional mechanic complete a smell in the car inspection; especially if you believe it to be an electrical short.

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