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What is your question?
P0304 engine code? What cylinder is the #4 on the engine ?What usually causes this problem
1 Reply
Number 4 cylinder is going to be the cylinder that is closet to where the engine connects to the transmission, or rear of the engine if you will. A Misfire Code is often caused by a worn out Spark Plug or Ignition wire. I would recommend replacing the ignition wires and spark plugs, and be sure to use good quality parts. here are a couple of articles on the subject of misfire that may help a bit http://repairpal.com/misfire-what-does-it-mean http://repairpal.com/check-engine-light
ngk plugs are what are recommended in these vehicles. and they should be changed every 30 thousand miles by hyundai specs. not that i believe in throwing out plugs every 30 k but thats what they call for. ive had mine in for 75 and no problems. also before you put plug wires onto plugs put some die electric grease in wire ends another hyundai thing that is required.