What's on my spark plug
 

I can't tell what's on my cylinder #2 spark plug. It looks like water, smells like gas (kinda), but I know coolant had previously leaked into combustion chamber..

https://cimg3.ibsrv.net/gimg/dodgefo...c5211ba908.jpg

I really hate to say this..... but, Taste it. If it tastes sweet, that's coolant. If it tastes like gasoline smells, well, it's gas. If it just tastes horrid, might just be water. :D

That's how it came out the cylinder? How old is that plug? It's perfectly clean, like new...which means it's being steam cleaned. That would make it a coolant leak, which means head gasket. Shoulda took pics of it next to the rest or the plugs, for comparison.

This is how it should look, more or less...

https://cimg5.ibsrv.net/gimg/dodgefo...e32bb99c5.jpeg

The #1 & #3 cylinder spark plugs had more carbon & #1 also had a bit of oil; 5, 4, & 6 all looked normal. I figured it was coolant. Already started looking into getting it down to heads.

A block tester will tell you for sure if you have a head gasket leak. Rent from any auto parts store