Q: Gas smell while driving.

asked by on

Every time I drive my car it smells like gas. I replaced five spark plugs and one of the spark plugs was covered in oil.

Smelling a gas odor coming from your vehicle is never good experience and it usually means there is a leak somewhere. From the description provided, it is quite possible that the EVAP Purge Canister has developed a leak and needs to be replaced on your vehicle. This canister captures gas fumes from entering the atmosphere and occasionally will need to replaced.

Other common situations I have seen concerning the vehicle and gas smells are when o-rings and seals, found on the fuel rail, go bad. They will develop a small but big enough leak to emit a gas odor, though your car may not actually be leaking gas. Another situation that comes to mind concerning the gas smell is when the back spark plugs were not torqued correctly after being replaced and then come loose, allowing once again a gas odor to escape the combustion chamber.

It was mentioned that five of your Expedition’s spark plugs were replaced and one was covered in oil. Spark plugs need to all be replaced at the same time in order for the engine to run efficiently and it is recommended this always be done. The spark plugs need to be torqued down to factory specifications as well so it is important that this is verified. In regards to the plug with oil on it, I would assume the vehicle may have developed a leak in the spark plug tube which allows oil to enter the orifice. With concerns like these, I would highly recommend enlisting the help of a certified mechanic as soon as possible to inspect your problems and avoid issues advancing in the future.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Gas smell while driving.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: RPM

Claimed by Jeff Engstrom

Q: front display module not working,radio buttons not working. 2010 escape v6

Hello, thanks for writing in about your Ford Expedition. You should have the radio display removed and then install the fuses again to check if they will blow again. If the fuses don't blow again then the radio is shorted....

Q: Flashing Check Engine Light is on. The engine shakes at idle and has low power.

Hi, the first task is to extract the problem codes which are causing the Check Engine light to flash. Most auto parts stores will do this for free. I would suspect plug wires next, and check the condition of the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...