Fuel Tank Ventilation Issue

I'm having trouble with my 2010 Ford Fusion, diesel engine, at 105299 km. The check engine light is on, and the engine stalls at idle. I suspect a fuel tank ventilation system leak. Could a defective activated charcoal filter be the cause? Has anyone else dealt with this?

4 comment(s)

Sounds familiar. I had similar issues with my Fusion. Have you checked the pressure sensor or purge valve? It could also be something in the EVAP system causing the fuel tank to not ventilate properly, impacting fuel efficiency.

Interesting. When you had the issue, did it also cause the engine to stall? And how did you pinpoint the charcoal filter?

Yes, the stalling was a real pain, especially at stoplights. I didn't diagnose it myself. I took it to a workshop. They ran tests and found the charcoal filter was shot. Unless you have the gear, I'd suggest letting a pro handle it.

Appreciate the insight! I took your advice and went to the workshop. Turns out you were spot on – defective charcoal filter in the fuel tank ventilation system. The repair cost me 275€.

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