Spark plug issues

So i pulled my plugs (2008 v6) and the 2 closest to the firewall on the passenger side appeared to have dry fouling on them....but only on half the plug (ie on the ceramic below the electrode one side was white and the other half black). All other plugs looked perfect.

I put in a new set and drove for a few days and the same two plugs are getting black again.

I am a bit confused as to how only half the plug can be fouling.....thoughts

 

Bad fuel injectors on those two cylinders? They might have a poor spray pattern or leaking slightly. Run some injector cleaner through.

 

I regularly run lucas through it so i am not sure, i can try some other stuff or swap the injector into a cylinder with a clean plug

 

Techron usually gets good grades, others like sea foam.

 

Swaped the coil packs to a clean plug, and it didnt foul that one

 

I did notice the two plugs in question are in the cylinders on the far end of the fuel rail....could they just be extra dirty since they are the farthest down the line....

 

Is your check engine light on? Or running rough? Fuel milage any worse than usual?

 

I doubt if there relative position on the fuel rail has any thing to do with this. If you are in the mood and inquisitive enough swap injectors. No effort, no learning.

 

No cel, idle is fine. Had trouble starting it a few times, but at the time i thought it was battery related, and it usually starts fine.

I had back surgery a few months ago, i was hoping to no have to pull everything off to get a the injecors

 

No cel, idle is fine. Had trouble starting it a few times, but at the time i thought it was battery related, and it usually starts fine.

I had back surgery a few months ago, i was hoping to no have to pull everything off to get a the injecors

 

Honestly unless you notice a big issue with any of those things, I would let this go for a few miles.

 

Don't mess up your back for this!

 

exactly where were the plugs fouling again? If the electrode is clean and the insulator is carbon fouled I would look for a localized rich condition.

Howard

 

if the trucks run ok why worry about it at all? drive it!!

 

here are two plugs will pretty low miles on them (like 5000 kms) . notice the fouling only covers like 180 degrees of the plug

 

cause I am getting into road trip season when I will be in the middle of nowhere a lot and would rather not have issues

 

Dude you're overreacting. Put those plugs in and drive. I don't see a major issue. If there was in fuel delivery problem, you would most likely feel it, or have a CEL.

 

Every other plug looks text book perfect, something isn't right

 

Maybe it's normal. I would go out and pull one of my plugs in the same location to see if it compares just to make you rest easier, but its cold outside. Maybe tomorrow. Could possibly be some crazy technical stuff such as a funky burn pattern caused by the flow from the shape of the intake plenum on those 2 cylinders.

 

That plug doesn't look fouled to me. Discolored a little, yes. Unless I had other problems, missing, fuel economy, smoking, I wouldn't be checking them every 5000 miles...