spark knock or preignition

[dukbludvl]

I recently read a post on another board on possible spark knock or preignition and wonder if you all can help me. I recently (at 45K miles) changed my spark plugs to champion copper plus and almost immediately I noticed a consistent ticking sound (best heard when you are at a stop and the windows open or if you're outside the truck listeining to it idle). Could this be spark knock? Could it be the result of something I did with the spark plug install? It's not as noticeable when moving, but the noise coudl be drowned out.

 

Please advise me and let me know if a new set of plugs can fix it or what I need to do. The truck purred like a kitten even at idle before I installed the new plugs. I want to get it back that way.

 

Please feel free to respond by PM if you like.

 

Thanks! Oh yeah, 00 Yukon 2wd 5.3L with 51K miles now.

[Blue Ghost]

First, Spark knock only occurs under load so that cant be it.

 

Second, did the plugs you install have a longer threaded area or a longer center electrode? if so it could be contacting the piston.

 

Third, part of the spark plug may have came apart in the cylinder

 

Fourth, I would not install Champion plugs in my worst enemy's truck (from past experience) they are worthless in GM vehicles

 

I would get a set of Delco plugs and install and see what happens