Performance Issues:
* Rough idling: The engine may shake or vibrate more than usual, especially at idle.
* Hesitation or sputtering: The engine might hesitate or stumble when accelerating.
* Loss of power: Your Explorer might feel sluggish or lack its usual acceleration.
* Misfires: You might hear a misfire (a popping or knocking sound from the engine). This is a serious issue that needs immediate attention.
* Engine stalling: In severe cases, the engine might stall completely.
Fuel System Problems:
* Check Engine Light (CEL): This is the most common indicator. The light will illuminate, and a diagnostic trouble code (DTC) will be stored in the vehicle's computer. You'll need a code reader to interpret the DTC.
* Fuel smell: A strong, unusual smell of gasoline can indicate a problem with the fuel system, potentially related to contaminated fuel.
Other Signs:
* Reduced fuel economy: You might notice a significant drop in your gas mileage.
* Knocking or pinging: A metallic knocking or pinging sound from the engine, especially under acceleration, could indicate detonation caused by low-octane fuel or contaminated fuel.
What to Do if You Suspect Bad Gas:
1. Stop driving immediately if you experience severe symptoms like engine stalling or misfires. Continuing to drive could cause significant engine damage.
2. Don't fill your tank completely. Leave some space in the tank to allow for expansion.
3. Try adding a fuel system cleaner: Follow the instructions on the cleaner carefully. This may help to clean out some contaminants, but it won't solve the problem if the fuel is severely contaminated.
4. Drain the fuel tank (if possible and safe). This is a more involved process and may require professional help.
5. Refuel with fresh, high-quality gasoline from a reputable gas station.
6. Have your vehicle diagnosed by a mechanic. They can perform a thorough inspection, diagnose the problem, and recommend necessary repairs.
Important Note: The severity of the symptoms will depend on the extent of the contamination and the type of contaminant. Small amounts of water or minor impurities may only cause minor performance issues, while severely contaminated fuel can lead to significant engine damage requiring expensive repairs. Don't ignore any of these symptoms.
