Quote:
Originally Posted by Atomic_Dog
I thought maybe too much dielectric grease, so I cleaned everything with no change. Wires are routed correctly. Suggestions?
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Dielectric means NON conducting. It's an insulator to keep the fire from going where it shouldn't. You should put it inside the boot but not on the connector or the metal tip of the plug. You can put it on the ceramic portion of the plug to help removal.
I made that mistake a long time ago on some NGK plugs and got the same result as you; misfiring plugs. I cleaned the plugs and connectors with something (maybe alcohol) and reconnected. It fired up and ran fine. Clean all of the metal on the plug and wire connector where you put the grease.
It's fine if you want to use it for something like coating your battery terminals, but not putting it on the terminals before you make the connection. Even so, it would still jump that very small gap. On a high energy ignition like a spark plug it will block it.