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Fuel pump issue?

Discuss anything to do with the (E83) BMW X3 here
(Older F25 discussion within will ideally to be moved to F25 Sub section below)
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GT456!
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Fuel pump issue?

Post by GT456! » Mon Oct 06, 2025 2:03 pm

04 BMW X3 e83 225k 2.5M54 engine.
I last replaced the fuel pump maybe 7 years ago...strong model I think.
Current concern:
Only after a complete fuel tank fill-up do I get a slight stall, hick up or hesitation (less than 3 seconds) when I pull away from the fuel station going up a slight incline.

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X5Sport
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Fuel pump issue?

Post by X5Sport » Mon Oct 06, 2025 6:31 pm

Could be the return valve on the injection rail side allowing fuel to flow back when it shouldn’t. Not sure how you test for that though.
:ant: Never anthropomorphise computers. They hate that.

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