blown out spark plug...ford 5.4

strange1

strange1

Well-Known Member
Joined
Mar 31, 2005
Location
Elkin
has anyone ever blown a plug out of a ford 4.6 or 5.4? apparently is a common problem. I learned a lot on this subject after breaking down at 5:30 this am.

Combine the fact that there is a relatively small amount of thread engagement with the fact that most people are afraid to properly tighten the plug into an aluminum cylinder head and you have a mess. It is common enough that more than one company has thread repair kits specifically design for the ford ohc engines. i found this one for the low, low price of $449. plus shipping and handling.
http://www.timesert.com/html/ford_sparkplug_faq.html

But at least the dealers already have the tools, i just have to pay them $150 bucks to use them. oh well.
Tighten those plugs.
 
very common problem with the triton 2 valve engines. but to be honest, as a former ford factory trained service technician, i would much rather repair the threads from a blown out plug, then have to remove a 3 valve triton broken spark plug!
 
fordwheelinman said:
as a former ford factory trained service technician
Click to expand...

how tight do I need to torque them? I may as well make sure the other 7 are tight while I'm at it. What are the chances that I can just run a thread chaser though it and not have to heli-coil it? I havent pulled the plug in question out to see how much aluminum is in the threads yet.
 
fordwheelinman said:
very common problem with the triton 2 valve engines. but to be honest, as a former ford factory trained service technician, i would much rather repair the threads from a blown out plug, then have to remove a 3 valve triton broken spark plug!
Click to expand...
even worse when the tip of the puller snaps off.
 
fordwheelinman said:
very common problem with the triton 2 valve engines. but to be honest, as a former ford factory trained service technician, i would much rather repair the threads from a blown out plug, then have to remove a 3 valve triton broken spark plug!
Click to expand...

x2!!

Impact is your friend on these.
 
There was an article in 4wheeler mag about this, maybe it was 4 wheel & off road. Anyway, it said Lisle makes a kit for getting them out clean with out dropping junk in the cylinder.
 
Back
Top