First time happen in over 157K miles

[deepNdirt]

I know this has been discussed before, I had my first experience last Friday with the v-10/6.8 spitting a spark plug, and wasn't even into the throttle when it happen, although I did notice while driving the last 5 miles before parking the truck it seem to have a slight misfire, when I backed into the driveway shut off the truck I realized I need to drive back a bit further, I restart the truck and wile only idling I heard the pop noise and then the sound of a blown cylinder, immediately turn off the engine open the hood and found the #2 coil pack had blown out of position with the spark plug in it's boot, I then knew what I had heard everyone talk about with the early v-10 engines has just happen to me
But what I couldn't figured out is why it did this when the engine was only idling?
Though I have been thinking it over and have a theory:confused2:
Could it have been possible this coil pack when bad (is why I was feeling the misfire) causing it not to fire the plug, resulting in the cylinder being filled with fuel and building excessive compression thus blowing the plug out?
I since have only reinstalled a new plug and coil back and driven it probably 100 miles with no problems, I really dread having to install a helicoil ... 1- it looks like a bugger to get to and 2- the shaving are going to fall into the cylinder, Right!

 

[Diamondpilot]

A good Ford shop can do the fix for around $300. I had a buddy who's truck spit two and he got it fixed for about $500. His truck is a F350 4x4, 2002, with over 225,000 when it happened two years ago.

Been fine since.

Chris

 

[Dmace]

Though I have been thinking it over and have a theory:confused2:
Could it have been possible this coil pack when bad (is why I was feeling the misfire) causing it not to fire the plug, resulting in the cylinder being filled with fuel and building excessive compression thus blowing the plug out?
I since have only reinstalled a new plug and coil back and driven it probably 100 miles with no problems, I really dread having to install a helicoil ... 1- it looks like a bugger to get to and 2- the shaving are going to fall into the cylinder, Right!

As for your theory, the compression in the cylinder will not increase with a faulty plug. If anything, it's less since it didn't fire. When your exhaust valve opens, the air/fuel mixture will go out the exhaust burnt or not.
Get the tool, it's worth every penny!
http://www.amazon.com/CalVan-Tools-38900-Insert-Installer/dp/B000Z9D6KW
I've done six trucks now (five 5.4's, one 6.8) and it's pretty easy depending on which plug it is. I had one 2001 F350 5.4l which blew the number 4 plug which is the passenger side up against the firewall. I was laying across the engine slowly drilling it out.

Doing it yourself is not bad, it took me over an hour on the first one but now it's less than 30 mins. The filings come out slowly as your drilling and any small pieces that may fall will just blow out the exhaust, it's aluminum so it won't hurt your cylinders.

 

[Ryan03]

As for your theory, the compression in the cylinder will not increase with a faulty plug. If anything, it's less since it didn't fire. When your exhaust valve opens, the air/fuel mixture will go out the exhaust burnt or not.
Get the tool, it's worth every penny!
Amazon.com: CalVan Tools 38900 Ford Spark Plug Insert Installer: Home Improvement
I've done six trucks now (five 5.4's, one 6.8) and it's pretty easy depending on which plug it is. I had one 2001 F350 5.4l which blew the number 4 plug which is the passenger side up against the firewall. I was laying across the engine slowly drilling it out.

Doing it yourself is not bad, it took me over an hour on the first one but now it's less than 30 mins. The filings come out slowly as your drilling and any small pieces that may fall will just blow out the exhaust, it's aluminum so it won't hurt your cylinders.

I also usualy take an HD shop vac. and install the hose in the blow port on the vac, then duct tape the other end over the tail pipe. Next, I bar the engine over until the blown air from the vac begins to blow out of the plug hole that I am about to repair. This will realy cut down on what gets into the cylinder. When complete, I briefly fire up the engine with the plug hole open to blow anything else out.

 

[Diamondpilot]

Our mechanic puts a thick axle grease in his bit to catch shavings. He did this to fix a oil pan plug in a 300 with no issues.

Chris

 

[timswi]

This is what scares me the most in my first Ford powerd Ford...I have a V10 in an E-450 motorhome...I have no idea how I would even get to the plugs, let alone drill them out. Four (for now) manifold bolts are rotted off (no recall?) and I can't find anyone who will call me back to have them replaced...I'm starting to wonder whether this was a good idea.

Guess I'll just mig bolt to bolt to get them out..No other choices as it appears.

 

[deepNdirt]

Thanks guys, all these suggestions sound like handy tricks, Now which one to use the plug insert kit looks pricey although may proof to be the most trusting way to do it, although I have read on many forums that the Helicoils have work as well with no problems, and the main concern seem to be keeping the shavings out by using the grease trick:thumbsup: but it does make since that it would blow out as well,
My theory of fuel build up in the cylinder would been while on compression stroke of course and it did it right away as soon as the engine started,
it will be coming weekend when I attempt to make the repair,