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Mercedes V Klasse diesel engine issues

My 2003 Mercedes V Klasse with a diesel engine, only 52837 km on the clock, is showing some worrying symptoms. Fuel consumption is higher, engine power feels reduced. It occasionally stalls when idling, and I've observed smoke when accelerating. Could this be a faulty injection system, maybe a defective cable or plug connection? What could cause this?

4 comment(s)

Could be a diesel leak affecting performance, or maybe air getting into the fuel lines. Have you checked for any obvious signs of diesel around the engine? Air in the system can definitely cause stalling and reduced power.

I haven't noticed any visible diesel leaks, but I'll check again. Where should I be looking for potential air leaks in the fuel lines? Are there specific connections or areas that are more prone to this issue on a diesel engine?

It's hard to say for sure without seeing it. Air leaks can be tricky. I'd suggest taking it to a workshop if you're not confident troubleshooting it. They'll have the tools to properly diagnose the issue.

I took it to a workshop, and it turned out to be a defective plug connection in the injection system, as I suspected. Repair cost was 95€.

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