Fiat Ducato rough starting high fuel consumption

Your description resembles an issue I encountered with my 2018 Opel Insignia, which is also a gasoline engine. The symptoms you describe – poor starting, elevated fuel consumption, diminished engine power, unstable idling, and occasional stalling – are all indicative of potential problems with the fuel injection system. In my case, a clogged fuel injector was indeed the culprit. Have you observed any unusual emissions or noticed any peculiarities in the engine's performance at higher RPMs?

Thanks for the quick reply! The emissions do seem a bit higher than normal, and when accelerating, the performance is not consistent, feels like it is struggling sometimes. Could you please elaborate on what steps you took to resolve the issue with your Opel? Did you attempt any DIY cleaning or go straight to a mechanic?

Given the elevated emissions and inconsistent performance you've described, it seems increasingly likely that the issue stems from a compromised fuel injection system. In my situation with the Opel, I initially considered attempting a DIY cleaning procedure. However, upon closer inspection and consultation with a trusted mechanic, I opted for a professional cleaning and diagnosis. Considering the intricacies of modern fuel injection systems and the potential for exacerbating the problem through improper handling, I would strongly advise against attempting a DIY repair. I would recommend consulting a qualified technician. In my case, the repair costs amounted to approximately 480€ excluding VAT.

Appreciate the advice. I'll take it to a workshop. Turns out it was indeed a defective injection nozzle, most likely from clogging. Had them replaced; total cost was 515€. Runs like new now, thanks again!