Dielectric Grease or Silicone Spray? - Mercedes-Benz Forum
 
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post #1 of 8 (permalink) Old 11-11-2015, 09:54 PM Thread Starter
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Dielectric Grease or Silicone Spray?

I just ordered a set of spark plug wires to replace my old set. I have some silicone spray here at home, but not sure if I sprayed that inside new wire boots, if it would block or reduce conductivity. Obviously some dielectric grease used sparingly would not create that problem.

I also plan to use attached door panel removal tool to help pull out existing wires. Will that work?
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post #2 of 8 (permalink) Old 11-11-2015, 11:22 PM
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Just use the dielectric grease.

That tool for removing panel clips may cause a problem.

I have a variety of tools like in this link and if the wire is stuck on the coil I very gently use a small hook tool and run it around between the rubber and the coil.
It always works and the only tim it did not the rubber was already torn.
http://www.amazon.com/Astro-9502-Hose-Removal-Piece/dp/B00XMUNKXY/ref=sr_1_1?ie=UTF8&qid=1447312753&sr=8-1&keywords=Hose+removal+hook+tool
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post #3 of 8 (permalink) Old 11-12-2015, 08:09 AM
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post #4 of 8 (permalink) Old 11-12-2015, 08:56 AM
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post #5 of 8 (permalink) Old 11-12-2015, 12:40 PM
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Quote:
Originally Posted by tonyjroy View Post
That is for pulling the metal boots off of the plugs and is the best way.

He was looking for a a way to get the rubber ends off the coil packs. They get stuck and the hooks are the best for that.
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post #6 of 8 (permalink) Old 11-15-2015, 11:42 AM Thread Starter
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Here is my inexpensive trick of getting this $35 17mm wrench. I went to flea market and got this 11/16th wrench for $3. I used my cut-off tool to cut it open, and it fits just right.

Regarding using dielectric grease, I got spark plug wires and grease, but as could be seen in pic below, there's a powdery substance inside wire opening. Not sure what that is, could I still use dielectric grease on top of this powdery white stuff, and if so, where exactly on black rubber do I apply grease, and what happens if grease gets to metal end that contacts spark plug? Also, do I need to apply any dielectric grease to the wire part going to coil?

If someone with know how, could respond to this question, I'd appreciate it, as I have already removed old wires, and waiting to proceed with rest of job.
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Last edited by LasCondes; 11-15-2015 at 03:21 PM.
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post #7 of 8 (permalink) Old 11-15-2015, 04:18 PM
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I use silicone spray and a 17mm wrench to remove the wire. Never had any issues. I have prob done over 100 wire/plug changes on 112/113 engines in my 4 years as a MB tech.
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post #8 of 8 (permalink) Old 11-15-2015, 04:30 PM Thread Starter
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Well, how about that white powdery stuff inside the metal end of the wires? With silicone spray, I just read instructions on silicone spray can and it says, "Flammable." How will that work on igniting spark plugs?

Last edited by LasCondes; 11-15-2015 at 06:16 PM.
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