Engine Performance problem
1998 Buick Century 6 cyl Front Wheel Drive Automatic 180986 miles
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Recently replaced plugs, wires, air filter,and fuel filter on my wife's 98 century. She still has a problem with gas mileage. it does fine when at 3/4 to full. anything less than 3/4 and it needs to refilled within 36 hours. she only uses the car for work delivering newspapers in the wee hours of morning. if it is on half a tank when she starts its almost empty when she finishes. paper route is about 60 miles long from start to home.

eakinswv wrote:

Engine Performance problem 1998 Buick Century 6 cyl Front Wheel Drive Automatic 180986 miles ---------------------------------------------------------------- Recently replaced plugs, wires, air filter,and fuel filter on my wife's 98 century. She still has a problem with gas mileage. it does fine when at 3/4 to full. anything less than 3/4 and it needs to refilled within 36 hours. she only uses the car for work delivering newspapers in the wee hours of morning. if it is on half a tank when she starts its almost empty when she finishes. paper route is about 60 miles long from start to home.

any fuel leaks or smells? ck engine light?

no fuel leaks and the check engine light is always on

eakinswv wrote:

no fuel leaks and the check engine light is always on

take it over to autozone and have the codes scaned to see what they are post them here...