Have You Heard Of This?

[k5 beast]

I was told that I can check my spark plug wires by spraying 409 or windex on them just above the valve covers. I would think that if one was grounding out on the block or valve cover, that the solution would help this, but why not just use H2O. Is it the solutes in the mix or amonia? What do you think?

 

[89GMCSuburban]

Don't know, but wires are so cheap, I just replace the set.

 

[sled_dog]

if your plug wires are broken and grounding somewhere else, you will QUICKLY see it without any liquid. At least in my experience. Nothing like telling someone to "fire it up" and watch tons of little lightning bolts.

 

[divorced]

if your plug wires are broken and grounding somewhere else, you will QUICKLY see it without any liquid. At least in my experience. Nothing like telling someone to "fire it up" and watch tons of little lightning bolts.

I always watch mine at night when the engine is running. When it's real dark it's easy to see the lightning. I've had wires before that were so bad you could see the spark travel down the entire wire.

 

[sweetk30]

dark and wet is good test. and if you think thay are bad then just get sum as thay are cheeep.