Peugeot Expert Engine Misfire

My 2008 Peugeot Expert, gasoline engine, is having issues. The engine runs rough, and the check engine light is on. When I accelerate, the van jerks, and engine power seems reduced. I cleaned the throttle body, but no improvement. Could this be a fuel pump issue, or something else?

4 comment(s)

The symptoms point towards a combustion issue. The rough running, check engine light, jerking, and power loss all suggest a misfire. Since you checked the throttle body, look at the injectors. A defective injector could be the problem. Have you scanned the engine for error codes? Knowing the codes would help.

I scanned for error codes, and it indicated combustion misfires, but didn't pinpoint a specific cylinder or component. How can I determine if an injector is the problem before replacing them?

The misfire code confirms the general area. Since the code doesn't specify a cylinder, it might be a more general fueling issue, but stick with the injectors for now. Without advanced diagnostic equipment, it's tricky to isolate a single injector. Given the symptoms and mileage, my advice is to take it to a reputable workshop. They'll have the tools and expertise to properly diagnose the injector performance.

I brought the Expert to a mechanic. They confirmed a defective injector. The repair, including parts and labor, came to 515€. It's running smoothly again.

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