emmadrache1

Seat Arona diesel engine running rich

Hoping someone can help. My 2018 Seat Arona diesel is giving me grief. It feels like the engine is running too rich. I'm getting reduced engine power, the check engine light is on, it runs rough, and my fuel consumption has gone up. Plus, it sometimes jerks when I accelerate. It has about 188820 km on the clock. Could it be the fuel injectors? Or maybe the spark plugs? Any ideas?

4 comment(s)

Sounds like a fuel issue. I had something similar with my Arona. Have you checked your air filter? Sometimes a clogged filter can mess with the air-fuel ratio.

Thanks for the tip! I did check the air filter, it looked alright. But could a dodgy air filter really cause all those problems? Reduced power and the check engine light too?

Yeah, mine had similar symptoms, including the check engine light. Turned out it was the fuel injectors causing the bad air-fuel ratio. I'd get it checked out by a professional. They'll be able to diagnose it properly.

Took it to the garage and you were right. They confirmed it was the fuel injectors causing the rich running. Replaced them and the car is running like new again. Total cost was around 515€. Thanks for your help!

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