Spark plug evaluation

[XSTNKT]

Yeah thankfully, of the lower plugs it's the one that's in plain sight behind the fender liner. But I'm bout sick to my stomach thinking I've just cost myself God know how much to save the 850$ I was quoted in labor at the local shop.

Just take your time and be careful. You'll be fine. Look at the bright side.... at least these trucks don't randomly spit out spark plugs like the 5.4L Lightnings did! That was always a good time. lol

 

[TomDirt]

That shop wouldn't tell you if they did the same thing, would they?

 

[mprice1234]

Sorry to hear this! Hopefully the thread chaser will clean it up for you, keep us posted.

 

[thatJeepguy]

Are the heads iron or aluminum?

 

[Donovan]

View attachment 442408
What's yall thoughts on this plug? Front cylinder on passenger side, lower plug. Not sure if it's oil or maybe unburnt fuel? 90k all the other plugs so far have looked good.

 

[Donovan]

Honestly, I had oil sitting on top of the drives side valve area, right near the front plug area but a little higher up. I think I have a valve cover gasket issue.

 

[Andy2675]

Well it looks like it all worked out, got a thread chaser from the parts store and it straightened it out. Plug torqued down all the way and is running fine.

 

[mprice1234]

Well it looks like it all worked out, got a thread chaser from the parts store and it straightened it out. Plug torqued down all the way and is running fine.

So glad you got that thread straightened out, I bet you went thru some stress on this one.

 

[Andy2675]

So glad you got that thread straightened out, I bet you went thru some stress on this one.

Me for about 3 days.

 

[rschap1]

I was going to mention coating the tap and/or thread chaser with grease prior to running it in the spark plugs hole.
If any chips are cut, hopefully the grease hangs on to them instead of letting them into the cylinder.