I have a 2000 Lightning, 28k miles. Only mods are JL chip, air intake and #4 pulley and exhaust. Was cruising along on the expressway, and all of heard a noise like something popped. Then the truck lost power and was immediately pulled over off the road. Pulley, air intake and belt all seems to be in tact. If you start her, she makes a terrible noise. It seems to be coming from the right side of the engine block itself. Does anyone know what could be going on?

 

sounds like a blown plug to me

 

I vote for a blown plug too.

 

does the engine engine shake at certain throttle?

I'd give you the blown plug thumbs up also. did mine #1 passenger way back

 

Sound like a demo derby car? Blown plug!! Mine did it a few weeks ago. Pull the mods and call the dealer.

 

It's at the Dealer, and it is a blown plug. Because of the thread damage, they are saying the head is going to need to be replaced. Is this true?

 

Some people have had success with heli-coils or inserts, but Ford tells their dealers that a head replacement is the only way to fix it. If it's covered under warranty, let them replace the head, if not, do a search and look at lower cost alternatives or bite the bullet for the new head. Good luck.

 

If i were you befor you pull off all your mods just take a quick look at your plugs just for g.p.T he odds are though if you did launch a plug its goin to be the #4plug.That plug is hard to get to so tightening it down requires a little mother funkin.
But hey if you did launch a plug well hey man im sorry.I wish you nothing but the best of luck and hope you just fouled one out.

 

Yes let them replace the head. Ask for the new design it has more threads. i got the new design on my warranty head.

 

I have to look at all options, my factory warranty has just recently expired.

 

Talk to them; a lot of time you can get them to cover all/part under "good faith" expecially if you are just out of waranty coverage. Or you could say you had heard a slight noise a while back when it was still covered(say it started then which it actually did).

 

What is a good price for a new head at the Dealer, including labor?