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-   -   testing plug wires? (http://forums.mustangworks.com/showthread.php?t=3016)

weagle 05-12-2001 05:27 PM

testing plug wires?
 
Can spark plug wires be tested using a meter? Will a wire respond on a continuity check. what is the best way to check the spark plug wire?

Capri306 05-12-2001 06:34 PM

You can do a resistance check to get an idea of whether they're broken or not. Most wires will register 5k-8kohms PER FOOT. The test I like to do is to put them on a car with a good ignition system, start it up at night, and then spray a mist of water over them and see if little lightning bolts go everywhere. If you see sparks, the wires can be considered bad. I usually change my wires every couple of years just to be on the safe side, though. People who drive with lifetime warrantied wires are sometimes missing the point: yes they are warranted against defects for as long as you own your vehicle, but that doesn't mean the wires are gonna be fine forever!

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Capri306, Moderator, The Mustang Works Online
1979 Mercury Capri, 5.0L -- C4 -- 2.73
1987 Mustang LX Notch

[This message has been edited by Capri306 (edited 05-12-2001).]

weagle 05-12-2001 07:49 PM

Thanks, My 89GT had began to idle rough. It has 81000 miles on it and had never given any trouble. The plugs look great and the wires were one thing I wanted to check because they are the ones that came one the car. It's kind of strange because it ran 8.95 in the 1/8 which is as good as any other run.


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