fuel tank baffle issue?

2011 MAZDA 3
143,000 MILES • 2.0L • 4 CYL • 2WD • AUTOMATIC
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BHAMDOC1973
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seems like a common problem where the baffle inside the tank becomes detached and starts to make noises while stopping. If I remove the baffle are there any issues that could be associated with that? these tanks are so expensive to replace.
Sep 10, 2025 at 6:41 AM
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STRAILER
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Yes, you can't take the baffle out, the fuel pump will starve in certain situations and make the engine stumble or stall. Usually there are push nuts that secure the baffle, can break or just fall off. You should be able to reach inside and replace them.
Sep 10, 2025 at 11:33 AM
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BHAMDOC1973
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You can replace the push nuts?
Sep 10, 2025 at 11:44 AM
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STRAILER
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Yes, this is what holds the baffle inplace.
Sep 10, 2025 at 12:55 PM
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BHAMDOC1973
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Do you have a part number for those tabs? I thought the baffle would be welded. So many people complain about this online. Many people replaced the whole tank too.
Sep 10, 2025 at 2:36 PM
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STRAILER
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You might need to replace the tank. I would remove he fuel pump for inspection, you can get the push nut at any hardware store.
Sep 10, 2025 at 5:40 PM
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BHAMDOC1973
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there is no way to remove the pump on this one without removing the tank, no access under the seat.
Video (Click to enlarge)
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Sep 10, 2025 at 5:42 PM
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STRAILER
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Correct, you must remove the tank.
Sep 10, 2025 at 5:43 PM
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BHAMDOC1973
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How am i supposed to empty the tank if i can't get to the pump from under the seat?
Sep 11, 2025 at 7:55 AM
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STRAILER
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Use a syphon hose, please check out this video:

https://www.youtube.com/watch?v=Q5MH2gnyFH0&pp=0gcJCckJAYcqIYzv

Please go over this guide and get back to us.
Sep 11, 2025 at 9:44 AM
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BHAMDOC1973
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unfortunately. these are placed in without tabs, don't see any broken pieces but the baffle is loose, I removed it but I can't see any tabs on it or inside the tank.
Sep 14, 2025 at 3:28 PM
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STRAILER
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Bummer, new tank it is.
Sep 14, 2025 at 8:20 PM