New Spark Plus Wire corroded

[bluestream1]

I changed my spark plug wires about 5000KM ago with Autolite wires. I just pulled one off to have a look and saw this corrosion on the terminal.

Any ideas what would cause this? All others were fine.

 

[bluestream1]

ttt

 

[waskly]

moisture..... the coil is probably just as bad...

 

[swetrid]

Most aftermarket wires are junk. If I had a dollar everytime I told a customer that his new aftermarker wires are the cause of his misfire I would be rich!