Q: My engine backfires like a lean carburetor

asked by on

My engine backfires like a lean carburetor and I have a gasoline smell too.

My car has 252000 miles.
My car has a manual transmission.

Hello. If your engine is backfiring and you smell gasoline then it is likely that your vehicle is running rich. Backfires can be caused by both rich and lean conditions, however a fuel smell is usually associated with a rich condition. Rich fuel mixtures can be caused by a wide variety of issues. A few things I would look at are the fuel pressure, the fuel pump, and the fuel pressure regulator. If any of these components, have an issue, they may be causing excessive fuel to be fed into the engine, resulting in a rich condition. Similar symptoms can also be caused by issues with the injectors, or with the engine management system. I would start with checking the fuel system and then go from there to diagnose the backfiring issue.

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. My engine backfires like a lean carburetor

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: Buzzing noise under dashboard

Hello. A buzzing noise that goes up and down with engine RPM is usually caused by an issue with the alternator. It is either caused by it being shorted internally, it being loosely connected, or a bad ground connection to...

Q: I was driving had my car on gear and lost acceleration. I pushed the clutch in and put on gear but only grind but won't move?

If the clutch lever, on the transmission, is functioning something has mechanically failed in the clutch and/or the transmission. If the clutch failed, and you heard gears grinding, as you tried to shift the transmission, some damage may have been...

Q: Stablity control warning light on constantly

I agree that technology breeds a love and hate relationship, my advice is to concentrate on the loving and leave the hate behind. The issue with your vehicle may be a somewhat straightforward repair. GMC is aware of a corrosion...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.