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from my past experience its one of two things : 1. someone left the gas cap loose after fueling clear the code and drive after tightening gas cap. 2. you have a defective solenoid or broke hose or item in the evap sys . only two ways to check a smoke machine for evap systems or a vaccum pump for evap sysytems. its possible to have a sticking vent solenoid but that requires a smoke/vaccum tool and a scanner that can activate a solenoid. cheaper to go to the dealer,than spend thousands buying tools. The Hyundai Accent and Elantra often have a problem with the charcoal canister becoming plugged. On the driver side of the car in back by the gas tank there will be the canister and hoses coming out of it. Pinch the hoses with your fingers and listen for a crunching noise. If you hear it disconnect the hose and little charcoal pellets will run out of it. If so then you need a new charcoal canister. They cost around $125 and can be found online or at a Hyundai dealer.

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โˆ™ 2009-12-11 20:42:14
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Q: What does a GROSS EVAP FUEL LEAK code in a 2001 Hyundai Elantra mean and how do you detect what the problem is?
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