fuel pump or line is bad on 1999 Kia Sportage

i ahve a 1999 kia that when it is ful run great but once the gauge goes near half tank it sputters and run badly can any one help

by in Miami, FL on May 19, 2010
1 answer 1 comment
ANSWER by on May 21, 2010
Definitely sounds like a fuel delivery problem, it could several things, but the fuel pump and fuel level indicator are certainly 2 places to inspect. Any Check Engine Lights on?
COMMENT by on May 22, 2010
no light are on , the only time the chk engine light come on when it miss firing an run badly , the machanic chage the fuel pump now he says it may be the fuel pump regulator that the only part they didnot change yet
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