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SchneidiPasc

Unsteady Mercedes A Class diesel with increased consumption and smoke development seeks advice and recommended mechanic

Hi guys, I need your help! My Mercedes A Class diesel from 2021 (mileage: 71,331 km) has been causing trouble recently. It no longer pulls properly, the engine runs unevenly and sometimes switches off when idling. In addition, the exhaust smells strongly and black smoke comes out when accelerating. Consumption is also high. The indicator light is on, which makes me wonder if it's a problem with the fuel composition. My last experience with the mechanic was not so good, so I'm asking here first: Have any of you experienced something like this before and can perhaps give me a hint as to what exactly might be faulty? And does anyone have a reliable mechanic they can recommend? I would be grateful for any information!

(Translated from German)

6 comment(s)

GeronRoth

Hi, I had a similar problem with my 2018 C-Class some time ago. The fact that your car sometimes stalls at idle and produces black smoke suggests that a cable/plug may be defective. My car also stopped pulling properly and ran rough. In the end, it was actually a faulty plug in the fuel line. It wasn't a simple fault, but it wasn't a total nightmare either. It was important to get it fixed as soon as possible to avoid further damage. As it is an electrical problem, it is advisable to go to a professional. If you need a good workshop, I can recommend the mechanic Klaus in Frankfurt. He has always fixed my problems reliably. I hope this helps you!

(Translated from German)

SchneidiPasc (Author)

Hi, thanks for your quick reply! So it seems that it could be an electrical problem. Klaus in Frankfurt sounds like a good choice; I might contact him. Do you remember how much you paid at the time to get the faulty plug fixed? And have you had any other problems with your car since then?

(Translated from German)

GeronRoth

Hey, I'm glad I could help! I had to pay just under €95 to have the faulty cable or plug repaired. So the price was quite okay. Since the mechanic did this Peter Pan to me - you know, with the error in the fuel composition and all that - my car has been running like clockwork. Fortunately, I haven't had any further problems since then. Keep your fingers crossed that everything runs smoothly for you too when you contact Klaus!

(Translated from German)

SchneidiPasc (Author)

That really reassures me. If it's only a matter of €95, then luckily it's not that bad. I'm glad you didn't have any further problems after the repair. Your words give me hope that I can get this over with. I will contact Klaus tomorrow and hope that everything goes smoothly. Thank you again for your help, that was really very useful. Well then, I wish you a safe journey!

(Translated from German)

Willy-T

Can I use the Carly adapter and the cell phone app (everything unlocked) to recode the fuel injector on the Toyota RAV 4 (diesel) myself? I have already changed it. Greetings and thanks Willy

(Translated from German)

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