r/mazdacx3

Car stalled with a quarter tank of gas.

My 2016 CX-3 ran out of gas while driving on an interstate highway even though the gas gauge registered a quarter of a tank. The CX-3 has a saddle-shaped gas tank that uses the fuel pump to create a siphon action that moves gas from one side of the saddle to the other when the fuel drops to around a quarter or slightly less. The possible problem is a weakening low-pressure fuel pump that is located inside the gas tank. The fuel pump works sufficiently to move gas to the engine, but according to some reports, if the fuel pump is not working to specifications, gas can be trapped in the tank saddle. I found one aftermarket low-pressure fuel pump available.

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u/mark1mason — 13 days ago