Thread: why am i knocking?

Originally Posted by gtpinsc

i just did the plugs and wires about 2k miles ago... parts store didnt have autolites, so i got ac delco 606's i believe and stock wires. may be a dumb question but how do i go about checking the coil? i dont really think its the DP, this sounds more like internal engine noise.

Originally Posted by JoshMcMadMac

Did you gap the plugs properly? Are all of the wires in good condition, not burnt or chewed up?

Originally Posted by David F

I'm wondering if I got the wrong plugs! I went Advanced and I told the guy I was on a budget. Now I'm no ASE mechanic (but not affraid to get dirty), and I do ask a sh*t load of questions before I do any work on my 2003 GT. So when I went to Advanced they gave me Champion copper plugs....I just replaced my Cat, plugs and wires. I got Autolite "professional" wires, and those champion plugs. When I accelerate I can hear a faint knocking and I'm not sure If I should replace my plugs AGAIN!!!!! I only hear it when I hit the gas. Also does anyone know if using a magnaflow cat (direct fit) is louder at the top! Or am I just an idiot and screwed something up! It's much louder than it used to be. There is something at the top of the down pipe (which wasn't on my stock cat. Just wondering!!!!

two diffrent people man haha

Originally Posted by blowfishRus6

two diffrent people man haha

lol, yep...that's a new one!

Originally Posted by David F

I just opened the box and put them in my car! The counter person at Advanced said they were pre-gapped!

I doubt regular copper Champion plugs come pre-gapped. That is probably your issue. Get a gapping tool and set the gap yourself on each plug.

Originally Posted by David F

What should they be gapped at?

Are you bone stock? Any mods impact the desired gap. Stock is .060".