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Ok I have a 2006 Sorento. It surges to 1700 rpm on idles also surges and chugs on exceleration. Dianostic check says the I have a #2 and #3 cylinder misfire and air fuel mis is to rich or lean. Replaced points and plugs(over 60.000 miles) still having same problems only worse. Help!:( Where is the air fuel mix regulator?
 

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05 Kia Sorento LX 4x4
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Ok I have a 2006 Sorento. It surges to 1700 rpm on idles also surges and chugs on exceleration. Dianostic check says the I have a #2 and #3 cylinder misfire and air fuel mis is to rich or lean. Replaced points and plugs(over 60.000 miles) still having same problems only worse. Help!:( Where is the air fuel mix regulator?
Did you change the plug wires too?

If a cylinder isn't firing, it could be sending the unburned gas out the exhaust causing a "rich" condition, that is compensated for by leaning the mixture out, which causes a near stall, which surges the engine as the gas mix is increased.

Your misfire still on #2 and #3?
 
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