Question about Dodge Intrepid

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My son has a 1998 Dodge Intrepid. He changed the plugs today, now he has a slight miss at idle that wasn't there before. Code reader has trouble code P0304. cylinder 4 misfire. He says it runs fine at normal speed. He said he pulled the new plugs to make sure they weren't cracked etc. Any suggestions, short of putting it through a full blown test?

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All the cylinders needs to be checked.one by one.The voltages on each cylinder has to be checked.It will show 12volts.Also check by interchanging the cylinders .like the coil of cylinder 4 to cylinder 3 and coil of cylinder 3 to cylinder 4 then check the voltages if any difference then coil of cylinder 4 needs to be replaced.The fault in the coil pack.I agree that the spark plugs are replaced.No doubt about it working properly.But this spark plugs gets power from coil pack to spark and if this is not giving proper power then it will show the error on particular cylinder.on which the coil is faulty. get the coil pack checked and replace the faulty one. Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Posted on Jul 06, 2010

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