Kuga Engine Running Lean

My 2018 Ford Kuga with a gasoline engine seems to be running excessively lean at 246390 km. I've noticed reduced power, the check engine light is on, rough running, and jerking during acceleration. Could it be a defective injection valve or injector, or should I look at other causes?

4 comment(s)

I had similar symptoms on my Kuga. Have you checked the throttle body for carbon buildup? A dirty throttle body can restrict airflow and cause lean running. Also, when was the last time you checked your oxygen sensor?

Thanks! I haven't checked the throttle body or the oxygen sensor yet. Are these components known to fail frequently in the Kuga? Did cleaning/replacing them fix your issue?

Cleaning the throttle body didn't fully resolve the problem for me. I'd recommend having a workshop check the fuel injectors. Replacing them cost me 515€, but the issue disappeared completely afterwards.

Based on your recommendation, I had the fuel injectors inspected, and they were indeed defective. After replacement, the engine now runs smoothly, and the symptoms have vanished entirely. Thanks again for pointing me in the right direction!

Join the discussion now: