1999 Mitsubishi Montero Replaced Spark Plugs Cables Noticed That Spending More

1999 MITSUBISHI MONTERO
150,000 MILES
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I replaced spark plugs and cables,but noticed that spending more gas than before and running at a 1000 rpm higher.
Approx. 800 rpm on idle.
Dec 21, 2012 at 2:45 AM
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HMAC300
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scan for codes and check fuel pressure first.
Dec 21, 2012 at 1:53 PM
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