timmy!!!!!!!
Explorer
I am about to change the spark plugs on my Dads v10 Excursion and was wondering if anybody has any tips when changing them out. I did notice the coil is directly on the sparkplug which does not excite me at all.
Be sure your spark plug socket actually holds on to spark plugs so that you can get them out.
Be careful retightening them because some of those heads were manufactured with a defect and their aren't very many threads there plus they are aluminum. I would recommend following the torque specs for them. If it hasn't popped a spark plug out yet maybe he is one of the lucky ones.
I have replaced plugs on a few of them. They are not anything special, just your regular old spark plug. There is a repair that can be done to the heads that have been ruined by the plug popping out. It does require a special tool that drills out the plug hole larger, taps some new threads into it, and then you thread in a special metal sleeve (like a heli-coil but not) that the plug can then be threaded into. On one truck I worked on the threaded sleeve come out with one of the the plugs. Never had one break off though, that would suck.
They may not be anything special - but they are definitely not like any plugs I have been used to seeing in my 50-odd years of changing them out. Here's what I am used to calling a spark plug - out of my Ford with a 460 V-8:
And this is what the new plug in the Triton V-10 looks like:
Note that on the old-style plug the threaded portion is at the bottom end of the plug. On the new one, the threads are in the middle. And that long, extended nose is what breaks off inside the head when one tries to remove it. Our mechanics were trying to remove another broken one today. The trick is to remove the broken part with Ford's special tool without having it drop out of the cylinder head down into the combustion chamber. If it does, the head has to come off.
As far as the spark plug popping out of the head, taking the aluminum threads with it, they tell me that occurred only in the first couple years or so of the Triton engine. That has not happened to any of our newer pickups so hopefully Ford got that fixed. My van is a 2007 and I sure wouldn't want that happening to me, some of the desolate places I drive.