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Followup To
Question -
Suddenly, when adding fuel, it surges back up the fill nozzle. Is the vent plugged? How do I repair it? 2000 Buick LeSabre V6
Answer -
Buick has been building cars for close to 100 years and just as many gas tank systems of all DIFFERENT complexities.
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AnswerTHANK you for the information, It makes answering your question much easier.
OK, If you have had ANY work done on the vehicle I need to know.
Has the fuel tank been removed for any reason ?.
Has there been ANY work done in th engine compartment ?.
Possible causes are:
1. faulty PRESSURE SENSOR within the fuel tank mounted on the fuel meter assembly.
2. Pinched fuel VAPOR return line from gas tank to charcoal canister in the engine compartment.
3. INCORRECT fuel gas cap.
4. Fault in the emissions systems PURGE SOLENOID.
5. Pinched, loose, broken vacuum lines i the engine compartment.
What mechanical work or ANY kind of work has been performed on the vehicle recently ?. As most problems that occur after a recent repair was made can be traced back to the area of where the repair was made as a vacuum line may have been knocked loose or a wire connection came loose, Look around in the area where work was performed.
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