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changed gas cap, check eng, light comes on with full tank of gas, light go off after the gas tank reads quarter tank, now hard to start eng, takes five or six try s

Vehicle: 2007 hyundai elantra 2.0liter

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Hi there

This usually indicates a problem with the fuel pump if the engine is cranking and not starting. You need a fuel pressure gauge on it and see how much the pressure is dropping overnight. If it's to much then replace the pump.

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