I changed out the plugs on my 01 dakota 6cyl an saw this whitish powder like suet on a few,one has it on edge of electrodean on ceramic area ,, an wanted to know what it is an might be from.
Also which plugs are best for these trucks?
Any additional info is appreciated

 

Best plug for N/A (stock) is NGK BRK6E 6962.

But you have some wayyyy worse problems for the plugs to look like that.

Let's start with this: What is the part number of the plugs you took out? I can pull the heat range code from the P/N.

But you'd have to be off on the heat code by a mile to be that blistering hot. How's your oil consumption?

White ash like that only has 2 causes: Spark plug heat range way too hot, or engine oil burning inside the combustion chamber leaving the ash behind.

 

Runs smooth.That is only on one side of ceramic part ,an it is not on all of them.
They were champion RC12LC4..
i was gonna replace with NGK ZFR6F-4291 -these have a bit shorter ceramic area..
I dont have any oil leaks but after about 1500 it needs a half to full quart.
I did use some seafoam an lucas at different times about 4k miles apart also.
These have been in for 11months.

 

A few other pics ,its not on all sides or on all 6.

 

On that part# lookup you said it says it does not fit

 

I did pull it up off ngk site for my truck also..4291

 

Correct, the 6962 does not list as fitting in most guides...because it is not exactly a "production vehicle" spark plug. It's one range colder and a little longer to un-shroud the spark.

When a guy that runs 5+ cars/trucks on the dyno a week says to run a specific spark plug, you listen.

Watch this video -> https://www. facebook.com/FlyinRyanPerformance/videos/2209262709296632/

Forum's video parse is not working

 

Quite a bit shorter on ceramic .


Ok so it will run cooler?
what other benefits using it ?

 

So a heat range 12 is at the very high end of the heat range spectrum for champion. I'm suspecting that the ceramic overheating is not helping the situation. But my guess is that you probably have oil coming past the piston rings or the valve seals, and it is burning and leaving ash on the plugs. That would explain the inconsistency between cylinders. A full quart every 1500 miles (or ~25 hours of operation at 60MPH) is very excessive, and represents 38 milliliters of oil per hour or 1 mL every minute and a half.

 

Did you watch the video?

You have to understand thermodynamics and spark control to understand heat ranges. It's not about how hot/cold the engine runs - you won't see a difference there. It's about how you control the flame front using heat ranges and timing (which is a disaster on stock tune). Ryan runs 5+ dyno vehicles a week, if he found 25 wheel horsepower just from old plugs to new plugs, you don't argue the facts, you just run the plug he says to run.