Can Old Gas Cause Check Engine Light?: 1 Minute to Understanding the Impact of Old Gas on Your Engine

Yes, old gas can sometimes cause the check engine light to turn on in your vehicle. As gasoline ages, it tends to lose its volatility and may start to decompose, leading to issues like poor engine performance, difficulty starting, misfires, or even clogging of fuel injectors. These issues are commonly detected by your car’s onboard diagnostic system, which then triggers the check engine light to alert you to a potential problem. Aside from reduced performance, old gas can also cause the formation of gum and varnish in your fuel system, potentially leading to more severe engine issues if left unaddressed. If you suspect old gasoline is causing trouble, consider draining the old fuel, replacing it with fresh gas, and, if necessary, using a fuel system cleaner.

As a designer, I’m always looking at how systems and environments interact. Just as outdated elements can disrupt the harmony of a room, old or stagnant materials like gasoline can disrupt a car’s operation. In keeping your environment—whether a car’s fuel system or your home’s living space—up-to-date with “fresh” components, you ensure smooth, efficient function. Similarly, in interior design, regularly refreshing layouts or experimenting with room planning tools can infuse new life and function into your space, much like fresh fuel revitalizes your car’s performance.

Tips 1:

If you’re storing your car for an extended period, use a fuel stabilizer to keep the gas fresh and prevent engine issues. Also, schedule routine checks to avoid surprises like a check engine light due to old gas.

FAQ

Q: Can old gas ruin my engine permanently?

A: While old gas primarily affects performance and can lead to clogged injectors or filters, serious long-term damage is rare if the problem is promptly addressed.

Q: How can I tell if old gas is causing the check engine light?

A: Signs include rough idling, hesitation, trouble starting, and poor acceleration, especially after the vehicle has been sitting for a while.

Q: Is it safe to drive with the check engine light on from old gas?

A: It’s best to address the problem quickly. While it might not cause immediate harm, driving for extended periods with engine issues could cause further complications.

Q: What should I do if I accidentally filled my tank with old gas?

A: Drain the tank if possible, replace with fresh gasoline, and consider adding a fuel system cleaner to help remove any buildup.

Q: Can fuel additives fix problems caused by old gas?

A: Fuel additives can help clean minor buildups. However, if degradation is significant, a professional inspection and possibly draining the gas tank may be necessary.