Question about 2001 Hyundai Elantra
Most cars newer than approxamatly 1990 have a check valve in the filler neck and some times the check vavle will stick shut. To fix the problem you may be able to just replace the check valve but you will most likly need to replace the filler neck. I am a mechanic and I am speaking from personal experience
Posted on Jun 04, 2010
The problem happens due to the air trapped inside the gas tank of your car. Most probably the ventilation tubes are blocked. Try to put the gas pump gun on the first stop so it will pump slower.Also make sure the nozzle is all the way in, start slowly and as it starts going, then you can increase the flow.The problem lies with the ventilation system ( for vapor recovery) for the gas tank. Essentially the gas tank cannot breath which is causing the gas to back up into the gas tank filler neck. The gas pump is doing what it is "supposed" to do and shuts off when it senses that. This normally only backs up into the filler neck when it get near full. However due to the ventilation problem, it is backing up much sooner. Also check the ventilation valve. The venting valve for the gas tank is not opening so the pressure is created in the gas tank and this problem occurs.Clean the ventilation valve and check if its faulty it needs replacement. Thanks.Keep updated for any further query.Rate the solution and show your appreciation.
Posted on Jun 03, 2010
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Posted on Jan 02, 2017
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