Citroën C1 model year 2007: Problems with engine performance, increased fuel consumption and black smoke - low-pressure fuel system as a possible cause?

Hey guys, I have quite a problem with my Citroën C1, year of manufacture 2007, gasoline engine. Recently it has been doing really strange things. It smokes black when I accelerate, the engine light is on, the engine just stalls, has no power, runs rough, jerks when accelerating, uses way too much gas, stinks from the exhaust and stalls when idling. I think it could be due to the low-pressure fuel system. Have you ever had similar experiences? How did you get this solved in the workshop? Looking forward to your feedback!

(Translated from German)

4 comment(s)

Hi, I actually had a very similar problem with my 2005 Citroën C3. My car knowledge is not extensive, I only have some experience, but I can at least tell you how I managed to solve it. I took my C3 to the garage and they found out that the wrong software values for the fuel pump were the problem. It cost 45 euros to fix it. The garage was really knowledgeable and explained exactly what the problem was and what they did to fix it. To be able to help you better, it would be good to know if you have made any modifications to your car or if any parts have been replaced recently? Sometimes such changes can also affect the fuel system. Let me know if you have more info!

(Translated from German)

Hey, thanks for the quick reply. No, I have not made any changes to the car. Nothing out of the ordinary was mentioned in the last service at 91075 km either. However, I did read up that maybe the throttle body should be cleaned. Do you think that might help?

(Translated from German)

Hey, no problem, you're welcome! So if nothing major was done at your last service, it might actually be an idea to have the throttle body cleaned. After all, the throttle body regulates how much air gets into the engine and if it's not working properly, it can lead to the problems you're describing. However, I wouldn't completely overlook the fault in the low-pressure fuel system that you mentioned. That could also be one of the reasons. Perhaps it really would be best if you took it to the garage and got some professional advice. I hope that helps you a little!

(Translated from German)

Hey, great, thanks for the input! Yes, a throttle valve cleaning sounds sensible and I should definitely have the low-pressure fuel system checked. Then I'll probably make an appointment at the garage and have it looked at there. Hopefully that will bring an improvement. Thanks again for the help! Have a good trip with your Citroën C3!

(Translated from German)

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