Spark Plugs

mtwofeathers

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Hey all.

So I have a 2018 5.7 Laramie down in Australia and I’ve just been quoted $120 each for new spark plugs plus labour, and apparently there are 16 of them.

Is there any other comparable plugs? Seems a lot of money for spark plugs.

Cheers
J
I tried to buy plugs for my engine, and no part store in the world even carries them. Not even the dealer, even tho they say can tune it up.
 

Gary Fields

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Although that is a terrible price for spark plugs it's not as bad as it looks. Currently the Australian dollar is equal to 71 cents of US dollar. Still well worth a few hours and buying a magnetic socket and extension. I advise squirting some penetrating oil into the hole first and letting it soak for a while. The truck will smoke a little when you start it but it makes them easier to remove. Thread the new plugs by hand using the magnetic socket and extension. Make sure not to cross thread them in the aluminum head. Once seated us a torque wrench to torque spec. Don't overtighten.
 

Aussie-John

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Although that is a terrible price for spark plugs it's not as bad as it looks. Currently the Australian dollar is equal to 71 cents of US dollar. Still well worth a few hours and buying a magnetic socket and extension. I advise squirting some penetrating oil into the hole first and letting it soak for a while. The truck will smoke a little when you start it but it makes them easier to remove. Thread the new plugs by hand using the magnetic socket and extension. Make sure not to cross thread them in the aluminum head. Once seated us a torque wrench to torque spec. Don't overtighten.

Yeah, don't do that!

Use anti seize paste on the threads before you put them in. We use it on all our aircraft engines.
 

Burla

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anti seize everything, well almost everything, they make something special for certain uhum applications.
 

EdGs

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I believe NGK advises not to use antiseize, the threads are already treated.
 

crackerjack1957

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EdGs is correct.........​

1. Anti-seize
NGK spark plugs feature trivalent plating. This silver or chrome-colored finish on the threads is designed to provide corrosion resistance against moisture and chemicals. The coating also acts as a release agent during spark plug removal. NGK spark plugs are installed at the factory dry, without lubrication or anti-seize.
Anti-seize can act as a lubricant, altering torque values up to 20 percent, increasing the risk of spark plug thread breakage and/or metal shell stretch. Thread breakage can sometimes involve removing the cylinder head for repair. Metal shell stretch changes the heat rating of the spark plug and can result in serious engine damage caused by pre-ignition. Do not use anti-seize or lubricant on NGK spark plugs. It is completely unnecessary and can be detrimental.

 

Burla

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Don't tell that to the guy who removed his factory plugs only to have one break during removal, just a couple months ago. You are dam-ned if you do dam-ned if you don't. Here is a thought on how to do it if you opt to do it, and I will always opt for it.
 

EdGs

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Don't tell that to the guy who removed his factory plugs only to have one break during removal, just a couple months ago. You are dam-ned if you do dam-ned if you don't. Here is a thought on how to do it if you opt to do it, and I will always opt for it.
I would agree with that, Burla. Damned if you do, damned if you don't.

I personally didn't use antiseize on mine, and I have fortunately never had one break on me either (and pray I never do). I have known a few Ford owners that it has happened to, though

I sometimes wonder if it is an environmental thing or if the line worker gorilla-****** it during the install, or somebody else did on a repair.

****** = fist ed, the word-censorship on this forum sucks.
 

crackerjack1957

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But I Know a Mechanic Who Always Uses it on Spark Plugs?​


If your mechanic uses copper grease on spark plug threads well as torquing them down, then be warned! NGK is adamant this procedure should be avoided on all costs. We must remember that the spark plug manufacturers are the most experienced out of all of us, with millions of pounds spent on R&D and hundreds of qualified mechanics testing them day in, day out.

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And then this is the correct way to apply anti-seize ............
 
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