Toyota Yaris Engine Sputtering After Fuel Change – Any Ideas?

It’s possible that the fuel quality could be the cause of the sputtering in your Toyota Yaris, especially if the issue started after filling up at a different gas station. Bad o r contaminated fuel can cause rough engine performance, including sputtering, poor acceleration, o r hesitation, especially at low speeds.

Here are a few things you can try to resolve the issue:

Fuel System Cleaner: You could try adding a fuel system cleaner to your gas tank. This product can help clean the fuel injectors and remove any deposits in the fuel system that might have been caused by poor-quality fuel.

Refuel with High-Quality Fuel: If you suspect the fuel was contaminated, try filling up at a more reputable gas station that offers high-quality fuel. This can help prevent any future issues related to low-grade o r dirty fuel.

Drain and Replace the Fuel: In some cases, if the fuel is contaminated o r you’re still experiencing problems after using fuel additives, it may be necessary to have the fuel tank drained and refilled with fresh fuel. Some mechanics offer this service if you believe the fuel quality is the issue.

Check the Fuel Filter: If the sputtering continues, consider checking the fuel filter. If it’s clogged, it can affect the flow of fuel to the engine, leading to sputtering o r poor performance. Replacing the fuel filter could fix the problem.

Inspect the Fuel Injectors: Poor-quality fuel can sometimes clog the fuel injectors. If the cleaner doesn’t resolve the issue, having the injectors cleaned o r replaced may be necessary.

If the sputtering persists after trying these steps, it’s a good idea to take your Yaris to a mechanic for a more thorough inspection. They can check for any deeper issues with the fuel system, fuel injectors, o r ignition components that might have been affected by the bad fuel.