Mustang Fuel Injector Issue

Whoa, sounds rough! I had a similar issue with my Mustang, although the symptoms weren't quite as bad. Check engine light was on, and the fuel economy went to hell. Do you smell gas at all, especially after you shut the engine off? If so, it REALLY points to a leaky injector. Have you scanned the OBD-II port for any codes? That could help narrow it down before you start tearing things apart.

Thank you for your response. Indeed, there is a discernible odor of gasoline, particularly after engine shutdown, which aligns with your suspicion of a leaking injector. I have not yet performed an OBD-II scan. Could you elaborate on the specific diagnostic codes that might be indicative of this issue?

Alright, the gas smell pretty much confirms it in my book. Common codes you might see are P0172 (System Too Rich, Bank 1), or maybe individual cylinder misfire codes (P0301-P0308) if it's just one injector acting up. Honestly, with that many KMs on the clock and the symptoms you're describing, I'd bite the bullet and take it to a trusted mechanic. Playing around with fuel injectors without the right tools and knowledge can be a recipe for disaster. Plus, they can properly diagnose to rule out other possibilities like a faulty oxygen sensor or even a clogged catalytic converter messing with the readings.

I appreciate your thorough advice. Based on your recommendation, I consulted a certified mechanic. The diagnosis confirmed a defective fuel injector. The repair, including parts and labor, amounted to 515€. The vehicle is now functioning optimally. Thank you again for your assistance.