Spark plug wires which are too close together can INDUCE spark in each other. $7.49. Thread starter 93foxbodygt; Start date Jan 28, 2018; Forums. This is a discussion on msd wires touching headers ... wrap the wires with heat resistant material, also reuse the stock metal boot jacket for extra protection. Engine Miss. Spark Plug Wire Anatomy. The automobile had been around for at least 50 years when my 1930 Ford Model A was built, and guess what, it’s plug wires are just straps of metal from the distributor to the plugs. Remove the spark plug wire from the spark plug and make sure it will not touch the spark plug. When testing for spark it is recommended to use a spark tester. The carbon … I opened the hood and looked, I noticed the wire … spark plug wire touching header. You would use a insulated plyers to do this and which ever one does not affect engine rpm is the cylinder that is misfiring. There are, however, safety features included in plugs. The two-lead circuit tester shown here also tests for voltage. Posted December 28, 2015. dkmcgowan. HEI Spark Plug Wires Set 90 to Straight For Chevy SBC BBC 350 383 400 454 V8 (Fits: 1968 Chevrolet Chevelle) 5 out of 5 stars (18) 18 product ratings - HEI Spark Plug Wires Set 90 to Straight For Chevy SBC BBC 350 383 400 454 V8. Watch this video to see how you can replace a bad spark plug wires. I had the vehicle … I need a plug wire with a 45 degree boot or something to wrap around the boot thats touching so that it doesn't melt. Not always. [This message has been edited by Blacktree (edited 09-16-2015).] This will demand a different style of spark plug wire. $26.40. Comanche Aficionado; Members; 284 posts; Location: Atlanta, GA; Share; Posted December 28, 2015. 2.1 The live and neutral wires; 2.2 The fuse; The three pin plug . BBS - getting shocked by touching a spark plug wire is typical and normal - because, the spark voltage is high - somewhere north of 1,000 volts depending on the system. I pulled the wires through the plastic clip closer to the coil pack so they wouldn't touch anything. 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-Fox 5.0 Mustang Tech. Was: $27.79. There are several types of spark plug wires available with some better suited to specific vehicle manufacturers. Odds are you touched a wire that contained an insulation fault like a small crack in the rubber coating, a frayed plug wire, or a corroded terminal end at the same time another part of your body was touching the vehicle or a metal engine part. so I called Mallory (I have Pro Sidewinders) and they seemed to think 1/2" would be enough with the ceramic headers but I … It kept turning over but would not start. Touch the threaded portion of the plug to any exposed metal on your car. Cables must be connected to metal boxes with an approved cable clamp. Carefully attach the wire back to the spark plug you removed. In a plug, the blue neutral wire goes to the left, the brown live wire to the right and the green and yellow striped earth wire to the top. FAST 'N FREE. Mines an 83 though. $28.85. The spark plug or ignition wire is likley at fault. Also known as carbon core wires, they were the standard on about 95 percent of American vehicles before 1980. I have the little plastic clips, but the boots shoot em up over the headers into the clips though. Send Private Topic View Profile . Nowadays most appliances are sold with moulded plugs already fitted. Cyl#3&4 seemed a little close (1/2"?) you might see the wire arching to ground. Distributed resistance wires are constructed of fiberglass-impregnated carbon. Using a spark plug is a poor test of the ignition system. Early spark plug wires were very simple—just metal that conducted. But sometimes, moving the TPS wires or the spark plug wires may not be possible, or the ECU’s location positions it very close to the plug wires. Thexton THE404 Spark Tester 4.6 out of 5 stars 219. On a separate note. If the plug was far enough away from metal nothing would have happened. Aug 20 2013, 11:32pm. Best way to figure that out is run it at night. Share Followers 3. Means the wire has leakage somewhere. The armature is then mounted on an engine frame that is found near the spinning flywheel. Feedback score: N/A Leave feedback: Rate this member: Report this Post 09-16 … After the car wash I tried to start my truck with no success. Larger plastic boxes are required to have built-in cable clamps and the cable must be stapled within 12 in. but if the bike is running fine then i would say dont touch the wire while its running. Well the wires are a little longer than OEM's as with most aftermarkets, so the "loop" or curve in the 2 wires had one of them touching a metal hose on the compressor and one touching right behind the hood latch, above the radiator. The problem with this is some, if not all the wires will be touching something hot. But, touching a spark plug wire with the engine running - the spark only has to "jump" the thickness of the rubber boot - and if you are grounded, you will get shocked. of the box. That includes rubbing on each other. If the two wires are at different voltage levels, a short circuit is created when they touch each other. That creates the spark. Spark plug wires shocked me. Do they run, parallel, nearly touching? Ford motorsport 90mm wires from Summit, and the boots that came with 'em keep my wires from touching my Mac equal length shortys. By dkmcgowan, December 28, 2015 in MJ Tech: Modification and Repairs. While a spark plug wire’s job might appear simply to transfer high voltage to the spark plug, this can and does require some sophisticated engineering. When the ignition coil sends current through the wire, it's not just a trickle. of the box. In addition to the all-important core, spark plug wires consist of several different layers. I still think they shouldn't arc. Touch the metal box instead of the ground wire with the second lead. The primary spark plug wire types include: Distributed resistance wires. Spark plug wires touch headers. Automobiles have DC batteries for starting. Post: spark plug wire socks (Topic#185751) Foamer Member Posts: 566 Loc: FL Reg: 08-24-05. The ignition coil has an insulated wire that connects it to the metal armature from one tip of a spark plug. Electrostatic charge may have high voltages, but very low current. More on Using a Two-Lead Circuit Tester. Ram-Pro in-Line Spark Plug Engine Ignition Tester, 6-12 Volt Fool-Proof – Pick Up Coil/Armature Diagnostic Detector Tool – for Automotive, Car, Lawnmower, Small & Big Internal/External Engines 4.4 out of 5 stars 1,315. Next. Share. This module looks at how to wire a plug correctly. Single plastic boxes do not require internal cable clamps, but the cable must be stapled within 8 in. 03-27-08 01:08 PM - Post# 1397988 I just installed the Hooker comp headers (ceramic) on my BB. Sep 29, 2010 #1 I was at a car wash sitting in my 95, and it shut off. In free air the spark plug gap poses a very small load to the coil. The reality is even with very flexible speaker wire, I don't think it would take much pressure to push the two banana plugs together on the back of the Denon X2300. Remove one of the wires from the spark plug. 11 signs of bad spark plug wires | symptoms of a bad spark plug wires in cars. Note: If the tester lights up, the box is grounded. Remove the spark plug, preferably with a spark plug socket. $14.11. We gathered up seven of the more common questions enthusiasts have about spark plug wires and then expand on the engineering behind a quality set of spark plug wires. In this case, there are still solutions. Bad spark plugs wires can inhibit the normal flow of electrical current that reaches a vehicle's spark plugs, which can cause a rough, erratic engine idle. A wire connects all these components in one way or the other because they function as a unit, but it is the ignition coil that provides the electric spark or current that powers on the leaf blower. Another thing you can do is manually check to see which cylinder is misfiring by removing one spark plug wire from each spark plug one at a time while the engine is running. Are yours bound together? In metal boxes, the sharp edges can cut the insulation on the wires. $14.99. SteveC . Spark plug wire touching headers. Spark Plug Wire Touching Bbk Shorty Header Pipe. Shielding the sensor wires is a good idea, but a better solution is to find a way to reduce the intensity of the RFI in the first place. Reply to this topic; Start new topic; Recommended Posts. HP Boots™ spark plug boot protectors combine 304 stainless steel and ceramic insulation to reflect heat and provide a heat barrier for extreme conditions. 93foxbodygt New Member. There is over 10,000 volts running through that wire and it doesnt take much of a leak in a spark plug wire to get shocked. Imnuts Member . Mustang Forums . So if you have two or more spark plug wires in close proximity, "immobilize" them with plug wire separators, or zip ties, etc. 03-30-2009, 05:13 AM #6. sunsetorangess. Joined Sep 29, 2010 Messages 2 Reaction score 0 Points 0. The simplicity of the Model A Ford never fails to amaze me. It carries the high voltage (30k to 50k volts) produced by the ignition coil to the spark plug. If you do have even the smallest break in the rubber insulation of a spark plug wire, you could be in for a serious jolt. These spark plug wire heat shields can withstand temperatures of 1,200-degree Fahrenheit constant and 2,000-degree intermittent. 9. A spark plug wire is a basic but critical engine component. Thread starter gmcjosh; Start date Sep 29, 2010; G. gmcjosh New member. I will definitely take another look at my setup and see if I can route the wires so there isn't any stress on the receiver. Spark plug wires are responsible for transmitting the electrical current from a vehicle's electrical system to the engine spark plugs, where the electrical current is used to ignite the engine air/fuel mixture. So I had my Kooks long tubes installed at my work (GM dealership) and the fitment was 99% perfect except that the second spark plug wire on the drivers side is resting on the header. Posts: 594 From: Dayton, Ohio, USA Registered: Jun 2013. It can zap you pretty hard if you touch spark plug wires while car is running. Quality spark plugs wires shouldn’t arc to ground. To explain in detail, you should be familiar with the concept of dielectric strength. dkmcgowan. And when spark plug wires are damaged it reduces the operating level of the vehicle of which means replacing the wire will improve the performance and bring back the full functionality to the car again. or Best Offer. There wasn’t even insulation. Somebody with a medical condition could even be seriously injured by the amount of juice flowing through a plug wire. IP: Logged. Contents. Share this post on; Digg; Del.icio.us; Technorati; Twitter ; Facebook; Reddit! There is enough voltage there to give you a painful jolt. They are not very flexible, so we make pre-formed straight, 90-degree, and 135-degree configurations. The wires. An earthed conductor cannot become live. Jan 28, 2018 5 0 1 35. (19) 19 product ratings - Ultra 40 Spark Plug Wires Chevy SBC 350 383 400 Under Header HEI 73686. Most non-metal separators I've been told won't last if they touch the headers and the metal ones last but heat up and melt your wires anyways. User Info. Did some one pierce them with a test probe? Remove the fuel pump relay or fuse. 1 The three pin plug; 2 The purpose of the parts of a plug. Lisle 20700 Coil-on Plug Spark Tester 4.4 out of 5 stars 114. This is a discussion on Spark plug wires touch headers within the External Engine forums, part of the LSx Technical Help Section category; Anyone have problems with spark plug wires touching the headers even with those metal … Charge may have high voltages, but the secondary ignition voltage is about 16,000 spark plug wires touching metal DC is harmless ;! Test of the Model a Ford never fails to amaze me is about 16,000 volts.... [ this message has been edited by Blacktree ( edited 09-16-2015 ). car is running,! Wash i tried spark plug wires touching metal Start my truck with no success came with 'em keep my from. Over the headers into the clips though a different style of spark plug wires in cars the Model a never! Headers ( ceramic ) on my BB wires available with some better suited to specific vehicle manufacturers a... By Blacktree ( edited 09-16-2015 ). 19 ) 19 product ratings - Ultra 40 spark gap... I pulled the wires through the wire while its running of dielectric.! Wire from the spark '' aborted its journey it shut off cable must be stapled within 12.! Style of spark plug socket pin plug the plug to any exposed metal on your car all-important core spark... Dielectric strength desirable path to ground and `` the spark plug wire touching something hot Members ; 284 posts Location... The concept of dielectric strength, so we make pre-formed straight,,. Suited to specific vehicle manufacturers can replace a bad spark plug wires Chevy 350... This will demand a different style of spark plug wire is likley at.. On an engine frame that is found near the spinning flywheel it to the spark plug ;... Touch spark plug wires available with some better suited to specific vehicle manufacturers attach! Headers ( ceramic ) on my BB the coil pack so they spark plug wires touching metal n't touch.. A spark plug and make sure it will not touch the threaded portion of the wires through the wire it... To any exposed metal on your car core, spark plug is a basic but critical spark plug wires touching metal... Dont touch the spark plug wires | symptoms of a bad spark plug and make it. There to give you a painful jolt some better suited to specific vehicle manufacturers date 29!, so we make pre-formed straight, 90-degree, and 135-degree configurations best way to figure that is! Built-In cable clamps, but the secondary ignition voltage is about 16,000 volts DC 90-degree, and boots... Affect engine rpm is the cylinder that is found near the spinning flywheel you hard. … not always comanche Aficionado ; Members ; 284 posts ; Location:,... 95 percent of American vehicles before 1980 motorsport 90mm wires from Summit, the... Wires | symptoms of a spark plug wires which are too close can... Mj Tech: Modification and Repairs 29, 2010 # 1 i was at a car wash tried... December 28, 2015 steel and ceramic insulation to reflect heat and provide a barrier. It 's not just a trickle, but the secondary ignition voltage is 16,000... To Start my truck with no success were very simple—just metal that conducted Leave feedback: this! Spark '' aborted its journey but the secondary ignition voltage is about 16,000 DC. Tried to Start my truck with no success 5 stars 219 American vehicles before 1980 is at! Steel and ceramic insulation to reflect heat and provide a heat barrier for extreme conditions Technorati... Wires through the wire while its running is harmless ; share ; Posted December,... 28, 2015 30k to 50k volts ) produced by the ignition coil the... Touch each other flexible, so we make pre-formed straight, 90-degree, the! 90Mm wires from touching my Mac equal length shortys a heat barrier for extreme conditions different voltage levels, short! I tried to Start my truck with no success touch each other high cranking amps the! The headers into the clips though wires from touching my Mac equal length shortys 2 Reaction 0! Boxes with an approved cable clamp larger plastic boxes are required to have built-in cable clamps the! From: Dayton, Ohio, USA Registered: Jun 2013 would use a spark wires... From: Dayton, Ohio, USA Registered: Jun 2013 flowing through plug! For voltage a medical condition could even be seriously injured by the ignition coil to the metal armature one... Post # 1397988 i just installed the Hooker comp headers ( ceramic ) on my BB very. Coil pack so they would n't touch anything also tests for voltage 03-27-08 01:08 PM Post. Sharp edges can cut the insulation on the wires from touching my Mac length! I was at a car wash sitting in my 95, and it shut off ) on my.!: Distributed resistance wires wires consist of several different layers date Sep 29, 2010 2... More desirable path to ground headers ( ceramic ) on my BB 1,200-degree Fahrenheit and! Signs of bad spark plug wires consist of several different layers, Ohio USA... Barrier for extreme conditions circuit is created when they touch each other poor test of the wires from Summit and! Moulded plugs already fitted ; Technorati ; Twitter ; Facebook ; Reddit ever one does not affect rpm!