Spark plug came loose from factory?

Thanks, those don't look so bad considering. Electrodes look pretty good.

 

Gif is the driver side spark plugs
Photo is the passenger side spark plugs

@DAS Taco @Smacky2020 @tonered

 

Bad quality but...Driver side spark plugs

 

Were they cylinders 1 & 2?

 

I have to get this done asap.
What is typical charge for spark plug job at a local shop??

 

I've seen $500 or $600 being floated around here. Just nutz.

It took me about 90min to check them. For whatever reason, most of the struggle was getting the connector off the coil packs. On the last one, I found that forceps made it a piece of cake and less strain on the harnesses. So for about $90 in plugs (conservative) and doubling down on labor at $100/hr, anything over $400 is highway robbery. $250 is reasonable, IMO.

I think @Shellshock found all six plugs factory for about $45?

For the cost of plugs, I'd just say to do it at home if you got enough extensions. All of the holes are straight shots. No wobbles or universals are needed. Just some fun wiggling out the coils on the right side. Of course, you could follow the SM and pull the intake runners? Some folks like and have done it that way.

 

Nevermind; saw your post in the other thread.
They were cylinders 1 & 2.
Seems a pattern is emerging; same as the misfires folks are reporting.

 

Also, OVT noted that fueling to the right side can be problematic. That was discovered during the FI work and just before the fuel pump recall dropped.

I did see an article that someone posted about misfires causing plugs to back out. Seems odd, esp with our long reach threads. That said, I had pinging on the Stock tune and some on the last OVT version. None this summer, but I am running 92 and the stellar 2.0 tune now. I'm just one data point, but no loose plugs at 30k.

There were two folks, I believe, with loose ones on the left side. @Hank Heel was one of them.




Edit to add some of the fueling issue info:
https://www.tacomaworld.com/threads...n-turbo-systems.566390/page-311#post-22629628

 

Another thing to add to the worry list that we learn here on this forum.

 

Since I'm bored during a 14 day stay at home vacation and read this thread, I decided to check the plugs. At 25k miles on my 2017 taco using a digital tech angle wrench all the plugs were right around 13 ish foot pounds. All 6 coils looked good but had no dielectric grease on them so they each got a dab of Ford xg3a. Everything took around an hour to do.

 

Are you sure that you increased the torque? When using anti-seize, you should reduce the torque by about 20%.

 

Yeah. That is what I was saying. I am used to about 20ft-lb for plugs in AL heads. So, I backed off to 20N-m (75%) and goofed.

 

You might move the working but worse for the wear coils to the easy to access cylinders. I would imagine the higher temperatures didn't do there life span an favors. At the least they would be easier to change if they happen to fail in the future.

Be aware that spark plug manufacturers don't recommend the use of anti-seize. Aside from the torque value which is easily addressed, it changes the heat transfer rate to the head which affects the plugs operating temperature. Due to the temperatures in time it can also cause the anit-seize, depending on the type, to gum up and make things worse. Almost all of them are hard coated from the factory to prevent seizure. To each their own of course, just sharing that information.

 

I was reading conflicting info about anti-seize.. "If using anti-seize compound, use sparingly and reduce torque by 30%."-DENSO https://www.densoproducts.com/learning-center/article/525/plug-torque-settings
I ended up not using anti-seize.

 

This. I wrote a big long article on wet versus dry torque and, if you use anything, oil, water, anti seize, etc on anything from spark plugs to lug nuts, torque values change considerably.

 

With these loose plugs at least we don't have to worry about them getting stuck like the Fords.

 

After seeing this issue pop up a few times I was paranoid enough to check my plugs. All were tight and no issues were found. I can sleep now.

2016 with 38K miles

Took about 90 min with lots of extensions. Only had to remove two other 10mm bolts (one on the pass side holding down a wiring harness plate and one on the drivers side holding down a foam insulator. Move some hoses fold the intake back...work as you go. It’s actually pretty easy to change plugs on this truck. I could do it in 45 min next time.

 

Some of mine were exactly the same way! All of the ones on the passenger side were super easy to take out. Borderline loose. The drivers side were 100% tight. As if two techs on different sides put it together with differing meanings of the word tight.

Just changed them at 70K. October 2015 build.

 

tell me about it. i helped an old girlfriend and changed the plugs on her like 2003"ishT Bird (new version) holly crap getting them out they don't break loose they are a struggle getting out and i was nervous i was screwing up the threads..that's why i am gun shy about doing them on my tacoma.