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Dielectric grease is conductive. Dielectric oil is not. If it were non conductive it would create resistance on a spark plug. So coating the ceramic shell allows a path to ground. Electricity follows the path of least resistance.
Dielectric grease is conductive. Dielectric oil is not. If it were non conductive it would create resistance on a spark plug. So coating the ceramic shell allows a path to ground. Electricity follows the path of least resistance.
Dielectric grease is a non-conductive, silicone-based grease that's designed to seal out moisture and prevent corrosion on electrical connectors. It also disrupts the flow of electrical current, which makes it good for lubricating and sealing the rubber parts of electrical connectors. It's commonly used in automotive spark plug wires, recreational and utility vehicles, and electrical systems in aircraft.
When it's hard to reach the furthest plug for removal or insertion, I like to take a rubber fuel hose and cut to about 12". Then I attach the end of the rubber hose to the spark plug. Nice tight fit. Allows you to easily bend the hose to fit the plug in tight areas. Grasp the end of the hose and twist until snug. Again, only really helpful when space is very confined.
Great write up. I sure appreciate when others take the time to do a great documentation on a DIY for others to follow.
OP
How many miles did you have when you completed this? Reason I ask is because my 2010 Base has 43,200 miles but has always had a slight but annoying miss at idle. (Like a mild cam is installed but is not). Dealer said there was no problem. Car has never thrown a code. Wondering if this would smooth it out?
Just an FYI
I just did the header thing and you have to remove the plugs to install them. In looking at the wires some looked difficult/awkward to get at, the sleeve heat protectors can get sort of stuck on after thousands of miles.
So bought these guys from good ole Harbor Freight as they seemed like they would help, and THEY DID. Anyways here ya go
NSF
Just an FYI
I just did the header thing and you have to remove the plugs to install them. In looking at the wires some looked difficult/awkward to get at, the sleeve heat protectors can get sort of stuck on after thousands of miles.
So bought these guys from good ole Harbor Freight as they seemed like they would help, and THEY DID. Anyways here ya go
NSF
03-22-2016, 10:46 AM
