So this morning I had a spark plug blow out I believe but idk if that would have cause this? Any theory's?

 

Yea, it would beat up the plug and tear the boot like that.

Thread a new one in , -see if you can get 28' lbs of torque on it. It should hold if you can do it.

Otherwise, you'll have to sert it.

 

BTW - That boot is carbon burned. I can see the trail lol. That's why you should always coat the boots w/ DI-electric, - go heavy. It prevents carbon burn and focuses pulse to the spark-plug.

 

I would also recommend this.

 

Btw, - Why it did that; The plug either wasn't torqued properly OR it was cross threaded.

The plug chamber threads could be damaged, - perhaps partially damaged. Until that's checked, you won't know how bad they are or if they're still in good shape.

After what just happened, the best thing to do is slap some grease on a plug thread chaser and clean up threads. Then try the new plug. It's best to start these plugs using a 3/8 piece of air hose. Because they are that easy to cross, - specially after they've been banged on top of the starter threads repeatedly. Your old spark plug acted as a hammer with each compression stroke, so... Yea, thread the new one in after chasing it with a piece of air hose slid over the ceramic. That way it'll either start right or not at all.

 

Good call on the hose, that's what I used.
I checked my plugs tonight for fear of this, still tight as.,,well something that is tight.

When were they changed last? You do it or a shop?

 

Well I changed all 8 and boots and that one was cross threaded. And won't go in more than half way. So do you suggest I get a plug thread chaser and try that next? What size? Also ford changed them last. So aggrevating!

 

You'll need a 14mm chaser. You might want to tape a socket on an extension and mount it on the plug next to the one your working on. That way you'll have sort of a guide to go by when starting that chaser. Maybe you'll get lucky if you start the chaser correctly and straighten out the threads well enough. You only have 4 good threads as it is, - hopefully it'll work.

If not,- you'll have to time-sert it and that can be pricey. I know a guy that rents a kit out thru the mail. Cheaper than buying one and he's good about it.

 

Sorry man I read it like 10 times but I don't understand what you are suggesting with the tape and sock on the one next to the one I'm working on.

 

He is talking about the angle at which the plug screws in. The 5/8 socket on an extension secured tightly will give you a good reference angle when trying to re-thread it, just make sure the extension is long enough so you can see it.