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2012 Tacoma TRD off road 2WD
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Never use a 11/16" socket to pull a spark plug. I know, why would you even use one.

Well, I was removing the plugs for the first time at 80,000 miles after I read the maintenance schedule. Had my truck on a 8 yr warranty so took it to Toyota for all work until then. Realized that they never changed the plugs and decided to do it myself. I changed out my wife's TSX just before with no issues. Got to the Tacoma and the plug came off the seat really easily (didn't think much of it initially). After about 3 turns it got harder and harder. Used a little WD-40, got easier and another 3 turns or so. Then it got really hard. Decided to read up and got some PB Blaster. That made it much easier initially. With having to move the socket between the 3 holes checked my socket set and had a long 11/16" that fit up with a new plug well. I dropped it in the tube and was able to turn the plug, so game on. Kept turning back/forth with resistance but went slowly to not strip the threads. Got 2 of them out but the front passenger got so hard i couldn't turn it and soon realized couldn't get the socket out....

Decided to punt and have it towed to a nearby shop (Firestone). They seemed confident they could get it out. A week later they call back saying they tried everything and felt uncomfortable going further. Reach out to the dealer and they were zero help. Ask some friends about who a good Toyota person is and take it to their shop (ex Toyota mechanic 20+ years). He spends all day on it, ends up trying to grind it out with no luck...

He tells me I will need an Engine replacement, gonna be about 4-5K and get a 100+K mile motor from a wreck... Insurance won't cover it because it wasn't an 'accident'. I call around to some work buddies that are machinists and they have a few ideas. Drag it over to their 'shop' and he does some magic with an impact hammer and some snap on tools.

So, $200 to the first shop for 4 hours because he "felt bad". $700 to the 2nd shop for a 'full days work' and $250 is all the last guy charged me. Probably most expensive spark plug change ever...
303482
303483
 

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01 Avalon XL, 03 Avalon XL
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1,362 Posts
Welcome to TN.

Great googely-ooks. Condolences.

At least you have brought sustenance to a goodly number of the technical folks in your community.

Sent you a PM (called a "conversation" here)
 

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2004 Toyota Camry, 2017 Toyota Camry, and many many more lol
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251 Posts
Wow lol I’m a dealership mechanic for Toyota and have never seen one of our vehicles have a 11/16 socket ever used on it usually it’s 5/8 for spark plugs but there is a first for everything I guess lol but I am glad you finally got it out
 

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'06 Avalon
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1,582 Posts
Amazing how an extra 1/16" can cause this kind of grief.

5/8" = 10/16"
 
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2008 Sienna LE
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990 Posts
Amazing how an extra 1/16" can cause this kind of grief.

5/8" = 10/16"
Yep. My first thought when I saw how that socket was scratched up was that it got stuck in the spark plug tube. I thought, "Gee, it must be a really thick-walled socket, to get stuck." But if it was an 11/16", yeah, I can see that. It does take a 5/8", by the way. I've changed mine twice so far, at 30k and 60k. I bought the 8-year/75,000 mile ToyotaCare warranty, but it didn't cover maintenance items, so I've done all that myself. I can't believe the dealer did the 30k and 60k services and didn't change the plugs - their system should lay out all the service items at a particular service for a given model. Weird.
 
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