2000 Hyundai Accent rough idle

2000 HYUNDAI ACCENT
121,000 MILES • 4 CYL • FWD • MANUAL
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TURBOEF
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when the car is filled above half a tank it has a rough idle it occasionally stalls but is ok when under half tank. i removed the spark plugs and it appears as if its running rich. any help you can give would be appreciated.
Feb 18, 2008 at 9:11 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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