I recently got a V6 and I went to pull the plugs and noticed something very weird
The plus from top 6, 5 ,4 and cylinder 4 is covered in something. No misfires or any indication that something is wrong with this engine. I did have a cel for P0138 but strangely after running seafoam though the intake the O2 sensor is working for the last couple hundred miles. The other 5 plugs are very clean and I would say have around 30,000 miles on them. I have sense replaced all plugs and just been trying to make sure there isn’t any other additives in the tank. Any idea or direction to go next?
The plus from top 6, 5 ,4 and cylinder 4 is covered in something. No misfires or any indication that something is wrong with this engine. I did have a cel for P0138 but strangely after running seafoam though the intake the O2 sensor is working for the last couple hundred miles. The other 5 plugs are very clean and I would say have around 30,000 miles on them. I have sense replaced all plugs and just been trying to make sure there isn’t any other additives in the tank. Any idea or direction to go next?