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My 2014 Pathfinder falters when accelerating but only when the gas tank is less than 1/2 full. Probelm worsens as fuel level goes down. Fuel Mileage is down also. Thoughts? I'll be researching how to test the fuel pump but in the meantime thought i'd reach out.
 

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2013 Pathfinder SL, Connecticut, USA
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You might have water or sludge in the tank. Get the tank to about a quarter or an eighth and try a couple of cans of dry gas.
 

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2019 Nissan Pathfinder SV 4x4
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My 2014 Pathfinder falters when accelerating but only when the gas tank is less than 1/2 full. Probelm worsens as fuel level goes down. Fuel Mileage is down also. Thoughts? I'll be researching how to test the fuel pump but in the meantime thought i'd reach out.
There's a few threads on this issue. Here's the most recent: 2018 PF SV-Tech abrupt loss of power under hard...
 
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