theostern93
Skoda Fabia Diesel Engine Running Rich
Summary of the thread
A 2012 Skoda Fabia diesel is experiencing issues with the engine running rich, leading to reduced power, a check engine light, rough running, increased fuel consumption, and jerky acceleration. The suspected cause is a defective injection valve. A similar case was resolved by diagnosing and replacing a faulty injector, which restored normal engine performance and fuel economy.
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4 comment(s)
theostern93 (community.author)
Interesting. Spark plugs were changed recently, and the air filter looks clean, but I haven't touched the mass airflow sensor. When you experienced this, did you also notice a significant drop in fuel economy?
philipplion6
Yep, fuel economy went down the drain! I tried cleaning the MAF sensor, but it didn't really fix the problem. Eventually, after more headaches, I took it to a workshop. They diagnosed a faulty injector, which was causing the rich running condition. Might be worth getting yours checked out by a pro.
theostern93 (community.author)
Thanks for sharing your experience. Turns out you were spot on. Took it to a trusted mechanic and they confirmed a faulty injector. 515€ later and it's running like new again. Fuel economy is back to normal too!
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SKODA
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FABIA
philipplion6
Whoa, sounds familiar! I had similar symptoms on my Fabia. Jerky acceleration, check engine light, the works. Have you checked your spark plugs and the air filter? A clogged air filter messes with the air-fuel ratio and can cause rich running. Also, when was the last time you cleaned the mass airflow sensor?