I have a 2002 kia rio car idals really hard and gets no power to it after stoping will run fine some times replaced spark plugs and coilpack ran ok for a week then started messing up again check engine light is on throwing 4 codes 3 of them say fuel injector should i replace fuel filter? Any help would be amazing.......

Ronny Bennett Sr.

• 6988 Answers
• Posted on Nov 11, 2009

SOURCE: 2003 kia # 3 misfire/ runs rough

Replace the coil for number 3 cylinder.

Dave C

• 1050 Answers
• Posted on Apr 19, 2011

SOURCE: I HAVE A 2005 KIA RIO THE CHECK ENGINE LIGHT CAME

Take it to another shop and have them do a compression check. If the compression is low, you have found the problem. If the compression is the same as the other cylinders, trade the fuel injector at that cylinder with another cylinder and see if the problem moves. If the problem moves (misfire code in different hole), the injector is bad. If the problem didn't move, and the compression is fine, then you have a vacuum leak on the intake runner to that cylinder, possibly the intake gasket. Print this and give it to your new mechanic.

Ed Warden

• 218 Answers
• Posted on Sep 13, 2011

SOURCE: where is it on 2002 kia rio fuel test port don't

You would have to test the fuel pressure on this vehicle by connecting to the line coming from the fuel filter to the fuel rail, there is no actual fuel test port on this vehicle. if you do decide to test the pressure... here is what your pressure readings should be>> Fuel Line Pressure 46-51 psi (320-350 kPa)
This actually sounds like a Fuel Pressure Regulator issue. I would recommend replacing the regulator and see how the vehicle responds after that..

Hope this helps...