Threaded hole in head
10-29-2014, 09:46 PM
#1
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Threaded hole in head
Hey I have a 2002 5.4l and I just replaced the engine after throwing a rod. Almost finished installing the new engine when I see a threaded hole about the size of a nickel on the inside of the left head. I have no clue what it is so I just bought some block plugs to see if one fits. Does anyone know if I'm missing a sensor of some sort or a plug? I believe the hole goes all the way through the head.
10-29-2014, 09:51 PM
#2
Got a pic?
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10-29-2014, 10:02 PM
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10-29-2014, 10:18 PM
#4
Ok, well if you are pressed for time to get her running then go ahead and find a plug to block it off with and get rolling. Be sure to use Teflon tape on the threads so it don't leak.
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10-29-2014, 10:24 PM
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10-29-2014, 10:34 PM
#8
Hmm looking at the pic, the location of the hole almost looks like the timing chain tensioner hole on the 4.0L engines the Explorer had.
10-29-2014, 10:43 PM
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What to do?
Not side what to do. Like I said I didn't notice it until after install, didn't even notice when I had it on the engine stand. I'll have to take the alternator off and double check if it goes all the way through. I just don't want to crank up my new engine and have it spew oil
10-29-2014, 10:56 PM
#10
I don't see any threads in the hole so there's a good chance it's just a casting blank.