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. When the ignition coil sends current through the wire, it's not just a trickle. Not always. Larger plastic boxes are required to have built-in cable clamps and the cable must be stapled within 12 in. Touch the threaded portion of the plug to any exposed metal on your car. This will demand a different style of spark plug wire. 2.1 The live and neutral wires; 2.2 The fuse; The three pin plug . Joined Sep 29, 2010 Messages 2 Reaction score 0 Points 0. In metal boxes, the sharp edges can cut the insulation on the wires. so I called Mallory (I have Pro Sidewinders) and they seemed to think 1/2" would be enough with the ceramic headers but I … Aug 20 2013, 11:32pm. [This message has been edited by Blacktree (edited 09-16-2015).] A spark plug wire is a basic but critical engine component. An earthed conductor cannot become live. Using a spark plug is a poor test of the ignition system. Thread starter 93foxbodygt; Start date Jan 28, 2018; Forums. 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. At that point, you created a more desirable path to ground and "the spark" aborted its journey. Early spark plug wires were very simple—just metal that conducted. To explain in detail, you should be familiar with the concept of dielectric strength. Post: spark plug wire socks (Topic#185751) Foamer Member Posts: 566 Loc: FL Reg: 08-24-05. 03-27-08 01:08 PM - Post# 1397988 I just installed the Hooker comp headers (ceramic) on my BB. 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. Spark Plug Wire Anatomy. Remove the spark plug, preferably with a spark plug socket. 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. Automobiles have DC batteries for starting. of the box. The problem with this is some, if not all the wires will be touching something hot. It can zap you pretty hard if you touch spark plug wires while car is running. Engine Miss. Mustang Forums . In addition to the all-important core, spark plug wires consist of several different layers. 9. Lisle 20700 Coil-on Plug Spark Tester 4.4 out of 5 stars 114. Spark plug wires which are too close together can INDUCE spark in each other. These spark plug wire heat shields can withstand temperatures of 1,200-degree Fahrenheit constant and 2,000-degree intermittent. Share this post on; Digg; Del.icio.us; Technorati; Twitter ; Facebook; Reddit! 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. In this case, there are still solutions. Spark Plug Wire Touching Bbk Shorty Header Pipe. 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. Means the wire has leakage somewhere. 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. More on Using a Two-Lead Circuit Tester. Quality spark plugs wires shouldn’t arc to ground. 93foxbodygt New Member. 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-Fox 5.0 Mustang Tech. The armature is then mounted on an engine frame that is found near the spinning flywheel. There are several types of spark plug wires available with some better suited to specific vehicle manufacturers. Contents. There wasn’t even insulation. 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. Even with the high cranking amps, the 12 volts DC is harmless. Remove the spark plug wire from the spark plug and make sure it will not touch the spark plug. Thexton THE404 Spark Tester 4.6 out of 5 stars 219. Spark plug wires touch headers. FAST 'N FREE. You would use a insulated plyers to do this and which ever one does not affect engine rpm is the cylinder that is misfiring. 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. In free air the spark plug gap poses a very small load to the coil. $14.99. On a separate note. 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. I still think they shouldn't arc. There are, however, safety features included in plugs. I pulled the wires through the plastic clip closer to the coil pack so they wouldn't touch anything. The simplicity of the Model A Ford never fails to amaze me. Also known as carbon core wires, they were the standard on about 95 percent of American vehicles before 1980. 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. Sep 29, 2010 #1 I was at a car wash sitting in my 95, and it shut off. By dkmcgowan, December 28, 2015 in MJ Tech: Modification and Repairs. 03-30-2009, 05:13 AM #6. sunsetorangess. But the secondary ignition Voltage is about 16,000 volts DC. SteveC . Share. I have the little plastic clips, but the boots shoot em up over the headers into the clips though. Did some one pierce them with a test probe? The primary spark plug wire types include: Distributed resistance wires. IP: Logged. The two-lead circuit tester shown here also tests for voltage. 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. They are not very flexible, so we make pre-formed straight, 90-degree, and 135-degree configurations. This module looks at how to wire a plug correctly. Do they run, parallel, nearly touching? Feedback score: N/A Leave feedback: Rate this member: Report this Post 09-16 … 1 The three pin plug; 2 The purpose of the parts of a plug. It carries the high voltage (30k to 50k volts) produced by the ignition coil to the spark plug. Carefully attach the wire back to the spark plug you removed. Was: $27.79. When testing for spark it is recommended to use a spark tester. 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. Ford motorsport 90mm wires from Summit, and the boots that came with 'em keep my wires from touching my Mac equal length shortys. The spark plug or ignition wire is likley at fault. The wires. Remove one of the wires from the spark plug. Imnuts Member . Posted December 28, 2015. dkmcgowan. 11 signs of bad spark plug wires | symptoms of a bad spark plug wires in cars. 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. After the car wash I tried to start my truck with no success. $7.49. That creates the spark. I had the vehicle … Cyl#3&4 seemed a little close (1/2"?) Spark plug wires shocked me. $14.11. 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. 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. The ignition coil has an insulated wire that connects it to the metal armature from one tip of a spark plug. Remove the fuel pump relay or fuse. 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. Are yours bound together? but if the bike is running fine then i would say dont touch the wire while its running. Jan 28, 2018 5 0 1 35. I opened the hood and looked, I noticed the wire … (19) 19 product ratings - Ultra 40 Spark Plug Wires Chevy SBC 350 383 400 Under Header HEI 73686. Send Private Topic View Profile . you might see the wire arching to ground. Share Followers 3. Posts: 594 From: Dayton, Ohio, USA Registered: Jun 2013. Comanche Aficionado; Members; 284 posts; Location: Atlanta, GA; Share; Posted December 28, 2015. Watch this video to see how you can replace a bad spark plug wires. There is enough voltage there to give you a painful jolt. Jan 28, 2018 #1 Hey guys, I’m new to this forum and I’m sure this has been asked before, but I’m posting hoping to get some insight on my … 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. Mines an 83 though. Best way to figure that out is run it at night. Reply to this topic; Start new topic; Recommended Posts. Have someone turn the ignition key for you. If the two wires are at different voltage levels, a short circuit is created when they touch each other. Of course, the current is low. 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. Spark plug wire touching headers. Note: If the tester lights up, the box is grounded. of the box. It kept turning over but would not start. $26.40. So if you have two or more spark plug wires in close proximity, "immobilize" them with plug wire separators, or zip ties, etc. Distributed resistance wires are constructed of fiberglass-impregnated carbon. That includes rubbing on each other. 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. Next. Nowadays most appliances are sold with moulded plugs already fitted. dkmcgowan. Single plastic boxes do not require internal cable clamps, but the cable must be stapled within 8 in. Electrostatic charge may have high voltages, but very low current. HP Boots™ spark plug boot protectors combine 304 stainless steel and ceramic insulation to reflect heat and provide a heat barrier for extreme conditions. If the plug was far enough away from metal nothing would have happened. 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 … User Info. spark plug wire touching header. 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. 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. or Best Offer. Touch the metal box instead of the ground wire with the second lead. Thread starter gmcjosh; Start date Sep 29, 2010; G. gmcjosh New member. Somebody with a medical condition could even be seriously injured by the amount of juice flowing through a plug wire. 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. 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For extreme conditions there to give you a painful jolt plugs wires shouldn ’ t arc to ground sure will... Dielectric strength posts: 594 from: Dayton, Ohio, USA Registered Jun! Did some one pierce them with a spark plug wire is likley at fault as carbon core,. And provide a heat barrier for extreme conditions 594 from: Dayton, Ohio, USA:... Connected to metal boxes with an approved cable clamp the boots shoot up! 5 stars 219 ''?: if the two wires are at different voltage levels, a short circuit created. ; Technorati ; Twitter ; Facebook ; Reddit three pin plug barrier extreme... 1/2 ''? by the ignition coil to the spark plug wire include... Can withstand temperatures of 1,200-degree Fahrenheit constant and 2,000-degree intermittent ( edited 09-16-2015 ) ]... Posts: 594 from: Dayton, Ohio, USA Registered: Jun 2013 run at! 135-Degree configurations at different voltage levels, a short circuit is created when they touch other...