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I have a 98 Kia sephia. Car ran fine when we purchased it is now idling rough and running a little rough. Had it hooked up to computer and it showed misfiring and low injector circuit on injectors 1 2 and 4. We replaced the idle control sensor and the idle air intake sensor. Have no clue what else to do. Any help would be appreciated. Thanks in advance
 

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99 Kia Elan 1.8L, 17 Ford Edge Sport 2.7L V6, 15 Mustang 3.7L V6, 2013 BMW K1600 GTL
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Welcome to the forum.

It would be in your best interest to add a little more information, such as the service history, mileage, last time the plugs were changed, what plugs, what plug gap, ..........

I would start checking out the plugs, coils, and coil HT wires, ...... and then look at the injectors.
 

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autolite plugs installed new two days ago gaped at .030 it has 131,000 miles. also just replaced coil pack...
other than that not sure about up keep just bought 2 weeks ago
 
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