Sparks ILZFR6D11

[Singapore stag]

You’d want the grease to be conductive wouldn’t you? It’s how the plugs are grounded in order to spark, an electrically insulated spark plug wouldn’t perform very well
Rob

What it meant is if the grease gets on the electrode it wont perform very well.
Rgds

That wouldn’t be a biggie, the grease would burn off fast with combustion temperature. A little grease isn’t a bad idea as seized plugs in the cylinder head can be a nightmare to sort out
Rob

Really!! Wont want that, is it having to pull the cylinder head out to rectify.
I know how bad a job that is. The Stag Ali heads are really hard to remove because the Metal bolts interact with the Aluminium heads and snap off, a nightmare scenario, someone on the Stag owners club invented a head puller but still a nightmare to get both heads off and they tend to warp. Stags suffer from head gasket failures.

[Chris_D]

I've always used a small amount of copper grease on plug threads for for years and countless changes without incident.
As Rob suggests, there's nothing worse than dealing with a stubborn sparker!

It's a good idea to check for tightness every once in a while, every 3 months at least or on any sign of a misfire.

[Singapore stag]

I've always used a small amount of copper grease on plug threads for for years and countless changes without incident.
As Rob suggests, there's nothing worse than dealing with a stubborn sparker!

It's a good idea to check for tightness every once in a while, every 3 months at least or on any sign of a misfire.

Thanks for the info. Since I got new sparks , I will check them on routine inspections.

[enzed4]

This is one of those questions that people will go one way or the other depending on what they believe, or have heard. Very first hit on Google about it was this

NGK does not recommend the application of lubricant such as copper grease to spark plug threads as the result is a reduction of frictional forces at the thread faces. .

This explains exactly why you shouldn't use copper/dielectric grease on spark plug threads:
https://www.driven2automotive.com/blog/ ... ark-plugs/

I'm not saying don't do it, but based on the advice of the people who make spark plugs, I wouldn't...

[Smartbear]

This is one of those questions that people will go one way or the other depending on what they believe, or have heard. Very first hit on Google about it was this

NGK does not recommend the application of lubricant such as copper grease to spark plug threads as the result is a reduction of frictional forces at the thread faces. .

This explains exactly why you shouldn't use copper/dielectric grease on spark plug threads:
https://www.driven2automotive.com/blog/ ... ark-plugs/

I'm not saying don't do it, but based on the advice of the people who make spark plugs, I wouldn't...

Have you got ngk’s phone number? I’ll give them a call if an ungreased plug seizes in my cylinder head
Rob

[enzed4]

This is one of those questions that people will go one way or the other depending on what they believe, or have heard. Very first hit on Google about it was this

NGK does not recommend the application of lubricant such as copper grease to spark plug threads as the result is a reduction of frictional forces at the thread faces. .

This explains exactly why you shouldn't use copper/dielectric grease on spark plug threads:
https://www.driven2automotive.com/blog/ ... ark-plugs/

I'm not saying don't do it, but based on the advice of the people who make spark plugs, I wouldn't...

Have you got ngk’s phone number? I’ll give them a call if an ungreased plug seizes in my cylinder head
Rob

I think it's 0800fu**off
But seriously, they're not saying the grease is the problem as such, it's overtightening of the spark plugs because of the grease preventing the spark plug from stopping at the correct torque.
So if you don't overtighten, no problem...

[Smartbear]

This is one of those questions that people will go one way or the other depending on what they believe, or have heard. Very first hit on Google about it was this This explains exactly why you shouldn't use copper/dielectric grease on spark plug threads:
https://www.driven2automotive.com/blog/ ... ark-plugs/

I'm not saying don't do it, but based on the advice of the people who make spark plugs, I wouldn't...

Have you got ngk’s phone number? I’ll give them a call if an ungreased plug seizes in my cylinder head
Rob

I think it's 0800fu**off
But seriously, they're not saying the grease is the problem as such, it's overtightening of the spark plugs because of the grease preventing the spark plug from stopping at the correct torque.
So if you don't overtighten, no problem...

That’s fine, i worked as a mechanic in a previous life and still have a calibrated elbow
Rob

[Jl-c]

I have always used aluminium grease as heads these days are often aluminium ( sorry yanks you can't spell ! ) and have never in 40+ years had an issue with a) removing the plugs or b) had one come loose. As Smartbear says "seized plugs in the cylinder head can be a nightmare to sort out "

[Jl-c]

Ignore the name ( it does however stick in your mind, about the only thing it sticks to ) I use this stuff, https://www.ebay.co.uk/p/1705630311?iid=233189780300 does a great job and a tub lasts for years, used sparingly. It was made for push-bikes but works great on anything mechanical wise.

[ronk]

That wouldn’t be a biggie, the grease would burn off fast with combustion temperature. A little grease isn’t a bad idea as seized plugs in the cylinder head can be a nightmare to sort out
Rob

Tell me about it?????
Many years ago I had a spark plug snap at the thread u'cut - It was a head off and Heli-Coil job to repair the Aluminium, O/Head cam head.
The head also had been fitted with Wills rings so they also needed to be replaced.
The job cost me a lot of time and money - Particularly bad because I was only doing someone a favour!

A little coating of Copper slip is your friend
Although after reading the article in enzed4's post I might not bother in future!