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Can I lubricate spark plug threads for removal?

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Stan in Oly, WA

02-25-2008 15:55:51

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My spark plugs are so hard to break free that I worry about stripping the threads in the block. Is there a reason not to use some kind of penetrating oil on them? If so, is there some other way to deal with this situation?

I've dealt with this kind of possible problem without guidance for more than forty years, but this forum is such an easy way to get good advice that I find myself asking for information on all kinds of things that I would previously have just pitched into, and found out the hard way.

Thanks, Stan

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Leland

02-27-2008 23:06:18

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

on any aluminum head always put anti seeze on threads before reinstalling

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guido

02-26-2008 16:05:28

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

Hello Stan.
I read your post on spark plugs removal and I like to add to the answers you may have gotten so far.
The biggest problem with stripped threads accures when plugs are removed from an aluminum engine while it is still hot, or very warm to the touch.
I would make sure that the engine is cold/overnight. When you start loosening the plug go a couple of turns out and then back in, if it is not coming out easly.Next time you go 3 turns, and back in if you have to. Lubrication would not help. Sometimes it feels as you may be stripping the threads but you you are carefull not to back them up all at once you should do fine.
Good luck!..... ..... GUIDO.

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Goose

02-26-2008 10:28:55

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

A bit of trivia. How many know that AC and Champion spark plugs were named after the same man?

Around 1910, when the auto industry was in its infancy, a man by the name of Albert Champion started a company making spark plugs, and named them AC after his initials. Around 1915, he sold the company to Buick, which is why to this day GM uses AC spark plugs.

Mr Champion then started another spark plug company and named them "Champion" after his last name.

I know a lot of ya'll have been lying awake nights wondering about that.

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greygoat

02-26-2008 10:19:30

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

I"ve had no problems, from Case,DC and L to
Wisconsin engines, to modern vehicles. I always
use copper base anti-sieze.

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Vern-MI

02-26-2008 05:21:32

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

Check out what the Autolite site has to say about spark plug installation.

Autolite

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36 coupe

02-26-2008 02:48:34

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

If you have Champion plugs made in Mexico you stand a good chance of the plugs breaking off in the head.Read about the problem in a farm paper and had it happen to me on an Olds v8.The plug threads stayed in the head.I had no trouble getting them out,Some old cracks were evident.Better get a can of Kroil penetrating oil before you take them out.Ive had Champion plugs come out hard over the years and never had one break.Anyone with late model Fords had better watch out if they hear what sounds like an exhaust leak.The engine is ready to spit out a spark plug.

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Jake 2

02-26-2008 02:46:30

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

Stan, lot of people have been VERY lucky, so I'll add---ALWAYS remove plugs on an aluminum head when the engine is COLD.

Jake 2

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dhermesc

02-26-2008 05:42:18

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Re: Can I lubricate spark plug threads for removal? in reply to Jake 2, 02-26-2008 02:46:30

"Stan, lot of people have been VERY lucky, so I'll add---ALWAYS remove plugs on an aluminum head when the engine is COLD."

Ford has released a TBS telling their "techs" (that term is used so loosely) to remove the plugs on their 3 valve heads when warm or hot. After 100 years of building cars they've forgotten how to build a decent head.

Link

I couldn't believe this line:

oh yeah..... ..... ....one other thing... they (spark plugs) are very expensive. a set of 8 of these for my 4.6 were $178.00 CDN of course.

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Jerry/MT

02-25-2008 21:03:33

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

Use antisieze on them when you install them, Just make sure that you just putit on the threads and not the insulator or the electrode.

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TexMac

02-25-2008 21:00:12

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

I am not even sure why we are having this conversation. You are just asking for trouble by not using anti-seize. Our old cast iron heads were pretty forgiving, but with the new aluminum heads you have to use it unless you want to risk replacing a head with every spark plug change. Just use it sparingly as recommended above. It is not caulk. You just need a coating you can still see the threads through. In a bind, Maalox will do, but the real stuff is better and a small tube will last forever is you only use the required amount.

As for lug nuts, I use it on my tractors that may get under water. My old sports car from the fifties recommended greasing the the knock off hub nuts every six months so you did not have to remove the wheels with a blue wrench, but they are right hand on one side and left hand on the other so they don't spin off. The only time I need penetrating oil is for things I haven't worked on before and therefore never got anti-seize. Things subject to vibration loosening are an obvious exception. Things subject to corrosion and especially different metals in contact should have it applied as a routine.

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jack12345

02-25-2008 20:29:42

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

Also try cleaning the carbon out of the threads with a spark plug chaser (tap) I find this helps more than just anti-seize.

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mixaplix

02-25-2008 18:46:46

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

i think a little dielectric compound will work

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rockyhawaii

02-25-2008 17:37:32

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

There is an anti-seize especially made for spark plugs but you have to ask for it.I've never seen it out on the shelf, and the dummies that work the counter don't usually know about it either.

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Bendee

02-25-2008 16:44:29

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

You find this with nuts of the same size..tried changing brand of spark plug? try some from another vehicle for fit only..

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Ford 312

02-25-2008 16:32:12

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

I have used penetrating oil. In addition, I have also used an air wrench with the compressor set on low pressure. This rattles the plugs and helps break them loose without breaking them off.

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MarkNOhio

02-25-2008 16:27:56

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

Stan, What marlowe said is absolutely correct. Get some good high temp anti-sieze but use it sparingly and don't put it on the first 2 threads at the end of the plug. Most anti-sieze is conductive and you don't want it running down on the electrodes and shorting out the spark plug.

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marlowe

02-25-2008 16:12:47

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Re: Can I lubricate spark plug threads for removal? in reply to Stan in Oly, WA, 02-25-2008 15:55:51

i put anti seize on all the ones i change

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Brian G. NY

02-25-2008 16:58:51

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Re: Can I lubricate spark plug threads for removal? in reply to marlowe, 02-25-2008 16:12:47

Me too, and on my wheel lugs as well!!

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Dick

02-25-2008 19:19:15

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Re: Can I lubricate spark plug threads for removal? in reply to Brian G. NY, 02-25-2008 16:58:51

That's a good question: Is it reccomended to put never-sieze on wheellug bolt threads? Some people have told me not to do it and others say it's a good idea. Wal-mart even uses it when they take off a wheel, so, as paranoid as they are it must be ok.
What do you think????

Thanks,
Dick

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guido

02-26-2008 16:14:03

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Re: Can I lubricate spark plug threads for removal? in reply to Dick, 02-25-2008 19:19:15

Hello Dick.
Some antiseize may react with aluminun wheels.
I would check the label on the product before using it. Some of the new wheels are very exspensive.
Guido.

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