Misfire after fixing the flashing check engine light problem?

2008 KIA SPORTAGE

196,000 MILES • 2.7L • 4 CYL • 2WD • AUTOMATIC

SCOTT EWING

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I changed my spark plugs and coil pack which were the reasons the check engine light was on in the beginning. I disconnected my battery as well while doing this. I plugged my battery back in after installing new spark plugs new spark plug cables and coil pack and my car is flashing check engine light saying that's a third and fourth cylinder are misfiring why is that.

Mar 17, 2023 at 9:10 PM

JACOBANDNICKOLAS

CERTIFIED EXPERT
110,175 POSTS

Hi,

If the light is flashing, that indicates a misfire is occurring. The first thing I suggest is to confirm you have the spark plug wires in the correct positions.

I attached a pic below showing the coils and identifying what cylinder each wire goes to.

Next, if the wires are correct, remove cylinder 3 and 4 spark plugs and make sure the gap is set properly. Also, make sure dirt didn't get on the electrode when you were installing them.
(See pic 2)

Let me know what you find.

Take care,

Joe

See pics below.

Images (Click to enlarge)

Mar 17, 2023 at 11:05 PM