Spark plugs.

[OR17TRD]

Purrs like a kitten now though!

I’m sure it’s like a new truck. Better MPG, more responsive and ideals like it should.

 

[vwgtiturbo]

I’m sure it’s like a new truck. Better MPG, more responsive and ideals like it should.

Definitely. No more knock or hesitating under part throttle acceleration. Really, it's night and day. We'll see the effect on mileage in a week or so.

 

[OR17TRD]

Definitely. No more knock or hesitating under part throttle acceleration. Really, it's night and day. We'll see the effect on mileage in a week or so.

You’ll see a little bump.

 

[Bogunn]

Well, I just replaced some Iridium plugs with stock Denso this past weekend. I found my old maintenance sheet, and it appears that I hadn't replaced them in 75k [emoji51] . While they might look better than copper plugs would at 75k, the truck did run a little rough, so if they do last longer, I'd be curious as to the real definition of "last longer". Stock plug gapped to .040", while the old Iridium gap had eroded to .070" (yowsa!):


Note to self: don't put off replacing the plugs until the truck runs roughly! HahahaView attachment 17105

That plug is wore slap out! I bet your truck is running a lot better. Lol.

 

[toywoodsguy82]

. These were the ones I took out.

 

[OR17TRD]

View attachment 17242. These were the ones I took out.

Original from factory or replaced by dealer. They do 3 and 3.

 

[whippersnapper02]

Half NGK and half Denso means original plugs.

 

[OR17TRD]

Half NGK and half Denso means original plugs.

112k miles let’s hope not original

 

[whippersnapper02]

112k miles let’s hope not original

Half and half from the factory. It's a possibility the previous owner changed them for half and half but it's more than likely they were never changed.

 

[toywoodsguy82]

I don’t know because the service records were few and far between

 

[OR17TRD]

I don’t know because the service records were few and far between

You would be able to tell. The truck would be running ruff and mpg would suffer.

 

[Bojangles]

You would be able to tell. The truck would be running ruff and mpg would suffer.

Ruff

 

[toywoodsguy82]

Never been over 17.6 mpg ‍

 

[Bojangles]

Emoji come thru right?

 

[OR17TRD]

Ruff

It’s for dug

 

[Bogunn]

It’s for dug

#SparkPlugDug

 

[toywoodsguy82]

Emoji come thru right?

View attachment 17245

Nope. Lol

 

[Bogunn]

Either way, the truck will run better now with new plugs.

 

[Joisey]

Curiosity has the best of me. Why does the factory do half Denso and half NGK plugs?

 

[Crawdad]

Curiosity has the best of me. Why does the factory do half Denso and half NGK plugs?

I'm not sure anyone actually knows... lol
So we know that they approve of 2 brands so we have options for replacements??? Haha