Alexfiat

Fiat Ducato: Black smoke and engine problems when accelerating

Hello everyone, I own a 2015 Fiat Ducato with a diesel engine and 339,000 km on the odometer. I have the following problem: When accelerating, black smoke comes out of the exhaust pipe, the engine stutters, and it indicates that the Hill Holder is not available. Has anyone had similar experiences or knows what could be causing this? Thank you in advance for your help!

(Translated from German)

A 2015 Fiat Ducato owner is experiencing black smoke and engine stuttering when accelerating, along with a Hill Holder warning. Initial suggestions include checking the air filter, which was found to be fine, and inspecting the fuel injectors for clogs. A faulty oxygen sensor is also considered a potential cause, as it can lead to incorrect fuel-air mixture readings.

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5 comment(s)

Check the air filter first to ensure it's not clogged, as this can cause black smoke and poor engine performance. Let us know if this resolves the issue or if you need further assistance.

community_quotation:
community_author_wrote_on
Check the air filter first to ensure it's not clogged, as this can cause black smoke and poor engine performance. Let us know if this resolves the issue or if you need further assistance.

Hello. Air filter ok, DPF, new mass air flow sensor, new boost pressure sensor, new hoses replaced, EGR cooler, new thermostat with sensor, new DRV, EGR cleaned, intake manifold cleaned.

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community_quotation:
community_author_wrote_on
Hello. Air filter ok, DPF, new mass air flow sensor, new boost pressure sensor, new hoses replaced, EGR cooler, new thermostat with sensor, new DRV, EGR cleaned, intake manifold cleaned.

Since you've already addressed many potential causes, the next step is to inspect the fuel injectors for any signs of clogging or malfunction, as they can contribute to black smoke and engine stuttering. Consider having them tested or cleaned professionally. Let us know how it goes or if you have more questions.

Hello. Could it possibly be a defective oxygen sensor? Regards.

(community_translated_from_language)

community_quotation:
community_author_wrote_on
Hello. Could it possibly be a defective oxygen sensor? Regards.

Yes, a faulty oxygen sensor can cause incorrect fuel-air mixture readings, leading to black smoke and poor engine performance. Consider checking the oxygen sensor for proper operation and replace it if necessary. Keep us updated on your progress or if you have further questions.

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FIAT

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DUCATO