tinkersdelight

Can the heads be removed on a Super Duty without pulling the engine? Need to change spark plugs at 110,000 miles in the Triton 5.4. As advertised the first one broke off in the head. I've got a tool coming to extract the broken one and wondering what to do on the rest! It looks like the only way to do this job right is to pull the heads. I won't pay the dealer $3000 to change the spark plugs.

Used to be a simple job to change plugs and to be pro-active on maintenance which I have always been, but this is punitive to say the least!

Jeremy

As far as the broken plug goes, good luck. When I changed the plugs on my superduty 5.4, I Loosened the coils and shot some w-d 40 down in the holes. And that helped for me. I let the stuff sit in the holes for about a week before I pulled the plugs. I did that because of reading stories about plug threads stripping and broken plugs on the modular engines. Im not saying this is the "correct" way to get stubborn plugs loose but it worked for me. My v 10 is due also so I will be doing that trick to that engine also.

tinkersdelight

So with the expansion of the heads(hot and cold contraction) with the WD40 sitting on top would also help in working down thru the threads after a time? Would the WD40 be too light to endure the heat and evaporate? Do this trick with a little heavier penetrating oil.....

Thanks for your input and I'll definitely utilize your advice before I tackle this again.