Just like the title says. can it?

 

I dont think that it can cause knock but it can cause a huge power loss...especially in the higher rpms. If your arching, its time for some new plug wires.

 

Knock is caused by pre-detonation of the fuel; in other words the fuel ignites before the spark plug fires. This causes multiple flame fronts in the combustion chamber that collide and generate supersonic shock waves (knock). I'm having a hard time understanding how bad wires/plugs would cause knock but you obviously need to replace your wires and plugs!

 

Not always true, but your basicly right. It can happen at the same time as when the plug fires. The flame just needs to start at another part of the combustion chamber. Don't mean to nit pick but.... ok, I guess I just did, lol.

 

yes they can IF its cross firing (not likey/impossible on an LS1) because on the older motors #5 and #7 fire right next to each other. sends the spark to the wrong cylinder and bang knock

I worked on a ford van this happened to and it destroyed #8 piston (#7 and #8 on fords fire next to each other)

 

Yeah.... Knock = Not good. Car go boom.

 

I know this is off topic but... dude, even the PCV valve grommet???

 

ok maybe that one and the bolt holes

 

Well i had noticed a slight "glow" from the # 1 and #3 plugs along with the # 5 wire arching to the block. I have been recently getting knock on my scanmaster and was just wondering if they were related.

 

Wouldnt hurt to change the plugs and wires just in case. Check and make sure that all of your header bolts and collector bolts are tight, You might be getting flase knock. What you can also do is run some 100 octain and see if it goes away. If it doesn not then you know its false knockl. But if it does.............

 

I ran 100 octane in my car and the knock mostly went away while driving, but it was still there during idle and start-up. I changed my wires this morning and all the knock went away! problem solved.

 

Can someone explain to me what the spark plug arching is? I would like to see what I can do to be safe and have that not happen to me.

 

If the plug wires are cross firing it could definately cause rattling if on the right cyl's.

 

Well the knock actually came back the next day so i guess it was not the wires anyways. the saga continues to find the answer.