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2001 Nissan Sentra Question: bucking occurs after every gas fill up and then occassionally on and off after that

 

Question

scalista, Cumberland, RI, April 12, 2011, 18:49
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Weekly the car bucks and always after fill up

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, April 12, 2011, 20:09
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     Master

    I wonder if the canister purge valve is sticking open and when you refuel the intake manifold is filling with fuel vapors. I just looked there are two service bulletins from Nissan about the evaporative system having problems.

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  • Answer #2

    autodude46 April 12, 2011, 20:11
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     Enthusiast

    I dont think the bucking is associated with the gas fill ups. Sounds like you have a secondary ignition problem that needs to be fixed. (cap,rotor,wires, fouled sparkplugs, etc.)

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