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1998 Hyundai Accent Question: Misfire on 1 and 3

 

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scratch, 1.5L 4 Cylinder, Grandville, MI, January 02, 2011, 13:30
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I have misfire on my 1998 Hyundai Accent 5 speed I have replaced plugs and coil pack and even had the codes reset and the check engine light still comes on. Now could the car have jumped time which is causing 1 and 3 to misfire I am really stumped on this one. when the car is cold it runs fine give it a little bit and it runs bad, I have put injector cleaner gas boost in and I dont know it is almost like a sensor is bad any Help would work to get this running correctly. Thanks frustrated guy

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    patrick mannion from Greg Solow's Engine Room, January 02, 2011, 13:45
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    It may come down to analyzing the freeze frame data or live sensor data using a professional grade scan tool.A good scan tool allows for non intrusive testing of lots of sensors. 1 and 3 aren't adjacent so it makes you wonder what could be common to both cylinders. Hyundai as a car manufacturer put a lot of free technical information and workshop manuals on line for Hyundai owners. Check out www.hmaservice.com lots of great information.

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