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Where to locate vaccum leaks in a 1989 chevy corsica

(1990 Chevrolet Corsica)
in Billings, MT on May 27, 2012
1989 using too much gas
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Popular Answer
on May 27, 2012
Check MAP sensor vacuum connections and circuits. Replace any broken or rubbery vacuum line, check air inlet hose. Is service engine soon lamp on?
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