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Old 04-12-2009, 11:25 AM   #1
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Default Dielectric grease on plugs?

Hello,

After continual problems with pulling the spark plug wire off the end connector, just wondering how much dielectric grease I can slap on and inside the spark plug connectors so the next time I check or clean the plugs, the wires won't pull off the connector? Can I completely coat the "white" part of the plug with grease with no problems? Thanks,

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Old 04-12-2009, 01:01 PM   #2
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Happy Re: Dielectric grease on plugs?

If it were me, (I never put anything on the plugs) I would just put a little amount on them. Nothing to soak them in, just a small amount.
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Old 04-12-2009, 01:21 PM   #3
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Default Re: Dielectric grease on plugs?

Just a dab inside the end of the boot is all I've ever done, then once you put the plug wire over the spark plug, snap it on and twist it back and forth a couple times to spread it around. That's about all you need .

if you keep ripping terminals off the wires, you may want to think about changing brands of wires.

The Eco in the Ion doesn't have spark plug wires, but it still has spark plug boots between the coils and the plugs, and I still use dielectric grease in the same manner.
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Old 04-12-2009, 03:18 PM   #4
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Default Re: Dielectric grease on plugs?

Thanks guys. So you're saying that a little "dab" of grease on the metal part deep inside the connector wire, that connects to the end of the spark plug is all I want and none on the rubber part of the connector? (Or, easier, to dab a little on the very end of the spark plug terminal) And I am changing to Denso wires this time and I hope it's easier to pull off in time.
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Old 04-12-2009, 03:28 PM   #5
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Default Re: Dielectric grease on plugs?

Yes, its a very thin coat of silicone grease on the plug terminal only and the coil tower terminal only. Any grease inside teh boot on either end will eventually result in tracking.
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Old 04-12-2009, 07:50 PM   #6
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Default Re: Dielectric grease on plugs?

Quote:
Originally Posted by OldNuc View Post
Yes, its a very thin coat of silicone grease on the plug terminal only and the coil tower terminal only. Any grease inside teh boot on either end will eventually result in tracking.
Thanks, will do. What is "tracking"?
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Old 04-12-2009, 10:41 PM   #7
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Default Re: Dielectric grease on plugs?

Just squeeze a dab out and fill the opening of the boot. Thats it. Push down and you're finished.
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Old 04-12-2009, 11:01 PM   #8
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Default Re: Dielectric grease on plugs?

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Just squeeze a dab out and fill the opening of the boot. Thats it. Push down and you're finished.
Thanks but that's what I've done the past two wire sets and they still have been hard to get off, pulling the boot off the wire in the process. Frustrating.
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Old 04-12-2009, 11:05 PM   #9
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Default Re: Dielectric grease on plugs?

Man what is going on with yours? We've been doing it for years. Never had a problem. None of our 3 Saturns have problems pulling the plug wires off.
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Old 04-12-2009, 11:20 PM   #10
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Default Re: Dielectric grease on plugs?

You may want to read up on the proper use of silicone grease. You can cause more problems than you fix if you are not careful. A sparkplug and or wire will have a shorter life time in a waste spark system because of the waste firing cycle. Expecting much over 30,000 miles of service is stretching it a bit. The boots should last just fine without and open end greasing and come right off when required.

This is copied from here: http://www.magnecor.com/magnecor1/main.htm

A common cause on engines (particularly those of Japanese origin) which suffer the problem of moisture accumulating in spark plug holes. In the interests of water-proofing the spark plug connectors, well-meaning installers fill an extended spark plug connector with too much silicone dielectric grease, which can prevent the terminal inside from ever locking onto the spark plug top. Driveability problems caused by water in the spark plug holes can be cured (after water is removed) by applying a smear of silicone grease inside the connector bottom seals, or onto the base of the spark plug insulator. This will help prevent arcing when the moisture again accumulates — however, driveability problems will not be cured if a connector’s terminal cannot connect over a spark plug top because too much silicone grease is stuffed into the connector. Remember, grease can't be compressed, and if too much of it is stuffed into a connector, the metal terminal inside will never be able to grip the spark plug top and the connector will never connect properly to the spark plug. Too much grease stuffed into flexible rubber spark plug connectors will cause the same problem, but usually the connector will only slide up on the spark plug, causing the engine to misfire.
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Old 04-13-2009, 12:24 AM   #11
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Default Re: Dielectric grease on plugs?

Thanks for the info. You'd think something so simple would be better known. Changing mine soon.
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Old 04-13-2009, 10:11 AM   #12
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Default Re: Dielectric grease on plugs?

Quote:
Originally Posted by OldNuc View Post
Too much grease stuffed into flexible rubber spark plug connectors will cause the same problem, but usually the connector will only slide up on the spark plug, causing the engine to misfire.
This is a major cause or problems when people misuse the grease. Many coil towers are slightly tapered, and too much grease makes the boot slippery, thus making it want to slide away from the terminal.

As much as possible, you want to protect the connection without trapping in excess amounts of air since the air holds moisture and will eventually cause corrosion. Most plug boots and other flexible connectors will "burp" out the air if you give them the right squeeze.

I suggest OldNucs method of putting the dielectric on the terminals only. Putting it inside the boot area often doesn't let the grease reach the terminal (which is what you are really wanting to protect) but often creates a seal locking in air.
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Old 04-13-2009, 10:22 AM   #13
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Default Re: Dielectric grease on plugs?

Quote:
Originally Posted by Signmaster View Post
This is a major cause or problems when people misuse the grease. Many coil towers are slightly tapered, and too much grease makes the boot slippery, thus making it want to slide away from the terminal.

As much as possible, you want to protect the connection without trapping in excess amounts of air since the air holds moisture and will eventually cause corrosion. Most plug boots and other flexible connectors will "burp" out the air if you give them the right squeeze.

I suggest OldNucs method of putting the dielectric on the terminals only. Putting it inside the boot area often doesn't let the grease reach the terminal (which is what you are really wanting to protect) but often creates a seal locking in air.

that's why when I posted earlier I stated to give the boot a twist back and forth to distribute the grease and not cause that problem. A little dab 'll do ya, as the saying used to go. As long as some of both terminals is protected from corrosion, you're good. Don't need to slobber the stuff on.
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Old 05-25-2011, 01:48 AM   #14
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Default Re: Dielectric grease on plugs?

A pack of this grease came with some wires I got at NAPA. I figured the less the better, so I used about a third of the pack and smeared it around the porcelain of the spark plugs very lightly.

When time for removal they were stuck on very good. Took alot of gusto to get the wires off the plugs. It seems the grease 'cooked' and hardened causing it to bond.

So, either some is not good at all or too little is not good enough
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Old 05-25-2011, 08:32 AM   #15
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Default Re: Dielectric grease on plugs?

Quote:
Originally Posted by mjoekingz28 View Post
A pack of this grease came with some wires I got at NAPA. I figured the less the better, so I used about a third of the pack and smeared it around the porcelain of the spark plugs very lightly.

When time for removal they were stuck on very good. Took alot of gusto to get the wires off the plugs. It seems the grease 'cooked' and hardened causing it to bond.

So, either some is not good at all or too little is not good enough
I used quite a bit on the inside of the plug wires for about a week, until my new wires came in the mail and I also had a hard time getting it off the plug! I think I used too much and it created a very good vacuum, making it very hard to pull off! Less is best, I guess.
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Old 05-26-2011, 12:09 AM   #16
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Default Re: Dielectric grease on plugs?

Used correctly it does cause a bit of a vacuum effect on the plug wires. But keep in mind that is also keeping the crap air/water/condensation out of the terminal areas.
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Old 05-31-2018, 09:02 AM   #17
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Default Re: Dielectric grease on plugs?

I am having trouble putting the boot back on the spark plug. I bought some silicone dielectric grease. A little bit did not help, so I slathered some all over the both inside and outside of the boot. With all the force I can muster, I cannot get it to push down all the way. I can feel the metal inside the boot just start to engage and the boot won't slide down. When I remove it to try again, there is a serious suction going on. I am looking for a small metal tube to stick in there to break the vacuum. I have an old ice pick available, so I will try that next. I wish I had looked here first.

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Old 05-31-2018, 09:29 AM   #18
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Default Re: Dielectric grease on plugs?

Quote:
Originally Posted by xenonracerx View Post
I am having trouble putting the boot back on the spark plug. I bought some silicone dielectric grease. A little bit did not help, so I slathered some all over the both inside and outside of the boot. With all the force I can muster, I cannot get it to push down all the way. I can feel the metal inside the boot just start to engage and the boot won't slide down. When I remove it to try again, there is a serious suction going on. I am looking for a small metal tube to stick in there to break the vacuum. I have an old ice pick available, so I will try that next. I wish I had looked here first.

Thanks to SaturnFans.com, I just changed the CPS. The Saturn is alive again!
I would check to see if the connector inside of the boot is bent. It should snap onto the plug with only a small amount of downward force. I wouldn't "slather" grease inside of the boot. It just goes on the tip of the plug and a quick wipe with an amount about the size of a grain of rice on your finger is plenty. I generally apply it to the plugs before I put them back in, but you can use something like a coffee stirring straw/stick to put a little dab on there as well if the plugs are recessed out of reach of your fingers.

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Old 05-31-2018, 11:46 AM   #19
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Default Re: Dielectric grease on plugs?

Quote:
Originally Posted by xenonracerx View Post
I am having trouble putting the boot back on the spark plug. I bought some silicone dielectric grease. A little bit did not help, so I slathered some all over the both inside and outside of the boot. With all the force I can muster, I cannot get it to push down all the way. I can feel the metal inside the boot just start to engage and the boot won't slide down. When I remove it to try again, there is a serious suction going on. I am looking for a small metal tube to stick in there to break the vacuum. I have an old ice pick available, so I will try that next. I wish I had looked here first.

Thanks to SaturnFans.com, I just changed the CPS. The Saturn is alive again!
Are these wires you used before (not brand new) and are trying to get back on? If so, the metal "connectors" may have moved, inside the wire. I had the same problem and ended up cutting off about 1/4 inch of the RUBBER at the very end of the wire itself. Snapped right on after that. I just used a single sided razor blade and got a clean cut. Good luck.
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Old 06-06-2018, 08:21 PM   #20
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Default Re: Dielectric grease on plugs?

Any issues if I changed plugs and wires and didn't use any grease? Should I go back and grease both ends of the wires?
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