New plugs

Reply Subscribe

Thread Tools

Search this Thread

09-14-2019, 06:52 PM

#41

dukedkt442

Member

Join Date: Jul 2018

Location: upstate NY

Posts: 1,285

Likes: 372

Received 291 Likes on 238 Posts

Quote:

Originally Posted by CKsBAT

It's carbon, very weird, never seen that before, but never dealt with this type of plug.

Then I’d assume that’s the misfiring cylinder. Too little gap can be as bad or worse than too much gap.

Reply Like

09-14-2019, 09:19 PM

#42

BigTerp

Senior Member

Join Date: Sep 2010

Location: Hagerstown, MD

Posts: 141

Likes: 80

Received 17 Likes on 15 Posts

Quote:

Originally Posted by CKsBAT

For anyone interested in what 58k looks like on highway driven plugs, this is what mine look like. Oddly enough, 1 had substantially more carbon than all the rest, probably my source of the random missfire.

Here is mine at 59K. It's an '04 I recently bought with 57K on it. So no idea how it was driven before I got my hands on it. Original plugs based on the plug numbers. No issues before the plug change. Just wanted to get it done and over with!! Interesting to see the difference compared to @CKsBAT Mine look more rusted than carboned. Age maybe? FWIW I ran 2 tank fulls of seafoam at 2oz per gallon before I changed my plugs. Tried to run the truck as hard as I could as well to help with the carbon.