HI. There are several areas of concern here. I will list them below. Check all areas stated in the list for faults.
Possible cuases:
1. Incorrect firing order set. On the 2.0, 2.4 and 2.7 engines. These engines are equipped with a distributor-less ignition system. This system incorporates a coil pack assembly, along with wire sets. In order for the assembly to fire correctly, the order of the wires must be set to the proper sequence. if not, the engine will not turn over, or start correctly. Make sure your firing order is correct, and make sure you have not placed a particular wire set into the wrong cylinder. I will post a picture of the correct firing order for your engine, below this list, shortly.
2. Incorrect spark plug gapping procedure. If the new spark plugs were gapped incorrectly, this will not allow for proper spark, thus, preventing optimal combustion, due to lack of fire. Check the spark plug gap using a wire gap gauge, and adjust if necessary. The gap should be 0.039-0.043 in. (1.0-1.1mm)
3. Failed coil pack assembly. This will be the worst case scenario. The coil pack supplies the necessary current that fuels each plug. The current is transferred, via wire sets.This will be the culprit if all the above areas are proven to be operational, and in good shape.
4. Failed wire sets. Replace the wire sets if faults are found at the connector at the ignition coil pack, or at the plug boot.
NOTE*
In order to provide the correct firing order for your engine, i will need the engine size and liter information, if possible. Please post this information, asap. Thanks..
All that information would have been very helpful in ypur original post.
Why did you rate me poorly? I supplied all the proper information for this iisue, at hand, considering the lack of information given in your original post. Now, after the fact, you have rated me poorly, and supplied the correct information needed for proper anylisis.
wired......
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I have a 2004 kia optima with a 2.4. It had a miss so i changed the spark pluggs. Then it wouldnt start. it had no fire from the coils so i replaced them. Didnt work.... I then proceeded to replace the crank and cam sesors. Still no fire from coils.. What is wrong?
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