Quantcast How Spark Plug Wires Work - Ford Truck Club Forum








New Posts



Remember Me?
       Join for free!




FTC Toolbar

Social Sites


Ford Truck Club Forum > GARAGE TALK > Garage Talk: Shop Class 101

Welcome to FordTruckClub.net
Welcome to FordTruckClub.net, the internet's premier Ford truck community! You are currently viewing our boards as a guest which gives you limited access to view discussions and access other forum features. By joining our free online community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple, and absolutely free so please, join our community today!

Forgot your password? click here.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools Search this Thread Display Modes
Old March 15th, 2011, 04:48 PM
JSoko's Avatar
JSoko JSoko is offline


Join Date: Jun 2009
Location: Northwest Georgia
Posts: 15,012
Images: 629
Likes : 34
Liked 187 Times in 169 Posts
Thumbs up How Spark Plug Wires Work

The spark plug wire has a seemingly simple job: Carry the high-voltage electricity produced by the ignition coil to the terminal of the spark plug. Once at the plug, the electricity travels to the other end of the plug, and jumps a gap between electrodes to produce the “spark” that ignites the fuel mixture. Because high-voltage electricity looks for an easier path to jump across than a pair of electrodes in a spark plug, containing the electricity within the wire takes a thick jacket of insulation, and some plugs have an outer jacket to resist cuts, high underhood temperatures, etc. If that outer jacket is damaged, the electricity may leak out to follow the easier path. In addition, high-voltage electricity produces radio waves, which can cause interference with all types of on-car electronic devices, from sensors and computers to radios and other entertainment systems. So, a simple length of solid wire can create problems.

The electrical conductor typically has a carbon-impregnated core of a suitable fiber, and everything from nylon to Kevlar has been used by different makers. That conductor (often covered by a second layer of a nonconductive material such as synthetic rubber) has enough electrical resistance to suppress radio interference without unduly weakening the spark. Some premium wires may have copper or stainless steel wire wound around the carbon core to reduce resistance. In some special applications in which minimum resistance is needed for engine performance, a solid metal wire has been used as a conductor, but over the inner layer of insulation is a layer of wound wire as a shield. On other types of wires, the outer jacket of the wire may have a metallic shield to prevent interference.

For Those Who Fought For It...
Freedom Has A Taste The Protected Will Never Know.

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

(View-All Members who have read this thread : 5
Agjake11 , Bulldog74 , DoubleDee , JSoko , Ozzie

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to replace spark plug wires JSoko Garage Talk: Shop Class 101 4 March 16th, 2011 09:09 AM
NEW '04-'08 Spark Plug; 4.6 & 5.4 3V JSoko 2004-2008 Ford F150
13 July 15th, 2010 09:59 PM
04-05 Spark Plug Problem 2004FX4F150 Garage Talk: Paint & Detailing 3 March 10th, 2010 03:35 PM
Spark Plug Removal instructions JSoko Garage Talk: Shop Class 101 3 July 18th, 2009 10:29 PM
5.4 Spark Plug Socket JSoko Garage Talk: The Tool Depot™ 0 July 18th, 2009 01:06 PM

plug , spark , wires , work

Forum Jump

FordTruckClub.net is not authorized, endorsed or affiliated with the Ford Motor Company
or any of their subsidiaries. Ford® is a registered trademark of the Ford Motor Company

Powered by vBulletin® Version 3.8.6 Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.