Jerking problem during hard acceleration on a BMW 335d xDrive GT

Start by checking the fuel filter for any clogs or restrictions, as this can affect fuel flow during hard acceleration. Let us know if this resolves the issue or if you need further assistance.

Hello, Sorry for the delay, I'm going to change the fuel filter and we'll see. However, I have a noise at the front of the engine, a scraping/grinding noise when the engine is running normally. Do you have any idea? Sincerely,

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Regarding the jerks, on the EGR side, butterflies, I disassembled, cleaned and tested everything; all functions work, no warning lights, but I still have the symptom.

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Check the condition of the engine mounts, as worn or damaged mounts can cause jerking during acceleration and may also contribute to unusual noises. If the issue persists, it would be wise to have a mechanic inspect it, especially since the noise could indicate a more serious problem. Let us know how it goes or if you have more questions.

Check the serpentine belt and pulleys for any signs of wear or damage, as these can cause scraping or grinding noises. If the belt or pulleys are worn, they should be replaced to prevent further issues. Keep us updated on your findings or if you need more help.