Here's something I've never heard of. When I had my car on the lift the other day, (oil change), I took a good look at the underside of the engine bay. That's when I noticed something odd about my front plugs. I reached up and touched them, and they were sticky. The rear plugs looked as good as the day I put them in, but both of the front plugs were sticky. Any help?

 

Sticky,... as in covered with forein substance.?? If so, what color is substance? Just on the Plugs? Please elaborate.

 

Most likely something that dripped down onto them. Also, some spark plug wires have dielectric grease on them to reduce arcing and assist in removal - might just be some of that that got pushed out of the boot.

Clean it up, see if it comes back, then worry .

Dale

 

Well, to be more specific-it looked like grease, but was was sticky, almost like a melted marshmallow. BTW thanks.

 

That sounds like the grease "dcfc3s" was speaking of. Its usually a whiteish color and your supposed to put it in the plug wire boots when installing plug wires

STEPHEN

 

It is the sealant from your knock sensor.

 

Yep, the engine heat melts the dielectric sealant from the knock sensor right above the sparkplug and drips down.

 

I noticed the same thing on mine. At first I thought it was oil that leaked onto the front plugs, but when I touched the plugs the stuff was thick and real sticky. The only place I could see that it was coming from was the knock sensor. I'm guessing this means I'll be needing a new sensor?

 

Well then, I guess it's a good thing that I'm getting a new engine in a month. I'll just have to get a new knock sensor to go with it.