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Spark plug adapter removal

Tiny
JERDOG63
  • MEMBER
  • 2002 MAZDA 626
  • 2.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 165,000 MILES
I installed spark plug adapter because of leaking oil and now I can't remove adapter. Is there any way to remove these adapters?
Wednesday, August 12th, 2020 AT 1:36 AM

14 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Was this a self tapping or a straight bolt in replacement?

Did you use any thread sealer when you installed it?

Roy
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Wednesday, August 12th, 2020 AT 4:18 AM
Tiny
JERDOG63
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Hey Roy! Yes this was straight bolt in adapter. No thread sealer.
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Wednesday, August 12th, 2020 AT 9:08 AM
Tiny
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Okay, thanks.

Then it should come out with the same effort from installing.

Did you install it? Was there any issue installing it?

Roy
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Wednesday, August 12th, 2020 AT 9:12 AM
Tiny
JERDOG63
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  • 33 POSTS
It doesn't come out with the spark plug.
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Wednesday, August 12th, 2020 AT 9:21 AM
Tiny
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It will not.

The plug should come out then the adapter can be removed. You need a socket that fits the adapter to remove it.

Roy
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Wednesday, August 12th, 2020 AT 9:25 AM
Tiny
JERDOG63
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I did try that but there is no socket bigger than a 5/8 that will fit down the port. It was suggested by a rookie that I try putting a strong epoxy to the end of an old spark plug and try inserting it.I wanted your input first.
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Wednesday, August 12th, 2020 AT 10:06 AM
Tiny
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Can you post me some pictures of what you see?

Why did you use the adapter and why are you removing it?

Roy
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Wednesday, August 12th, 2020 AT 10:10 AM
Tiny
JERDOG63
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I was getting oil on my plugs from the valve cover gaskets leaking, causing them to misfire, so I temporarily installed adapter to compensate for the misfire until I could change the valve cover gaskets. Now that I have changed gaskets, I wanted to remove the adapter, as I have new plugs and new valve cover gaskets.I will send pics as soon as I get to the car.
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Wednesday, August 12th, 2020 AT 10:00 PM
Tiny
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Sounds good. I will be watching for the pictures.

Roy
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Thursday, August 13th, 2020 AT 3:48 AM
Tiny
JERDOG63
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This is the adapter:
Image (Click to make bigger)
Thumb
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Friday, August 14th, 2020 AT 11:14 AM
Tiny
JERDOG63
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I hope you can see this.
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Friday, August 14th, 2020 AT 11:15 AM
Tiny
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You could try using a thread sealer on the spark plug to the adapter and let it sit for a few hours and see if it will come loose.

Roy
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Friday, August 14th, 2020 AT 11:17 AM
Tiny
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I will try that. Thanks a million!
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Friday, August 14th, 2020 AT 4:47 PM
Tiny
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You are welcome.

Always glad to help.

Roy
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Friday, August 14th, 2020 AT 5:01 PM

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