An earthed conductor cannot become live. After the car wash I tried to start my truck with no success. There are, however, safety features included in plugs. Of course, the current is low. 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 … More on Using a Two-Lead Circuit Tester. 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. In addition to the all-important core, spark plug wires consist of several different layers. The spark plug or ignition wire is likley at fault. Sep 29, 2010 #1 I was at a car wash sitting in my 95, and it shut off. 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. Imnuts Member . They are not very flexible, so we make pre-formed straight, 90-degree, and 135-degree configurations. That creates the spark. 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. 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. Spark plug wires touch headers. 1 The three pin plug; 2 The purpose of the parts of a plug. When testing for spark it is recommended to use a spark tester. Thread starter gmcjosh; Start date Sep 29, 2010; G. gmcjosh New member. When the ignition coil sends current through the wire, it's not just a trickle. Was: $27.79. 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. The two-lead circuit tester shown here also tests for voltage. Nowadays most appliances are sold with moulded plugs already fitted. 03-30-2009, 05:13 AM #6. sunsetorangess. I pulled the wires through the plastic clip closer to the coil pack so they wouldn't touch anything. Automobiles have DC batteries for starting. It carries the high voltage (30k to 50k volts) produced by the ignition coil to the spark plug. FAST 'N FREE. Thread starter 93foxbodygt; Start date Jan 28, 2018; Forums. Means the wire has leakage somewhere. Ford motorsport 90mm wires from Summit, and the boots that came with 'em keep my wires from touching my Mac equal length shortys. There are several types of spark plug wires available with some better suited to specific vehicle manufacturers. Spark Plug Wire Anatomy. Post: spark plug wire socks (Topic#185751) Foamer Member Posts: 566 Loc: FL Reg: 08-24-05. 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. Note: If the tester lights up, the box is grounded. Next. IP: Logged. Feedback score: N/A Leave feedback: Rate this member: Report this Post 09-16 … Best way to figure that out is run it at night. Using a spark plug is a poor test of the ignition system. The simplicity of the Model A Ford never fails to amaze me. 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. 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-Fox 5.0 Mustang Tech. 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. Electrostatic charge may have high voltages, but very low current. Share. You would use a insulated plyers to do this and which ever one does not affect engine rpm is the cylinder that is misfiring. It kept turning over but would not start. 11 signs of bad spark plug wires | symptoms of a bad spark plug wires in cars. 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 this case, there are still solutions. If the two wires are at different voltage levels, a short circuit is created when they touch each other. This module looks at how to wire a plug correctly. 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. 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. Remove the fuel pump relay or fuse. $26.40. These spark plug wire heat shields can withstand temperatures of 1,200-degree Fahrenheit constant and 2,000-degree intermittent. $14.99. Touch the threaded portion of the plug to any exposed metal on your car. Cyl#3&4 seemed a little close (1/2"?) HP Boots™ spark plug boot protectors combine 304 stainless steel and ceramic insulation to reflect heat and provide a heat barrier for extreme conditions. Spark Plug Wire Touching Bbk Shorty Header Pipe. 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. $14.11. Single plastic boxes do not require internal cable clamps, but the cable must be stapled within 8 in. Spark plug wires shocked me. or Best Offer. It can zap you pretty hard if you touch spark plug wires while car is running. of the box. Lisle 20700 Coil-on Plug Spark Tester 4.4 out of 5 stars 114. I still think they shouldn't arc. Posts: 594 From: Dayton, Ohio, USA Registered: Jun 2013. The primary spark plug wire types include: Distributed resistance wires. 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. of the box. 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. 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. Distributed resistance wires are constructed of fiberglass-impregnated carbon. If the plug was far enough away from metal nothing would have happened. Contents. 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. Have someone turn the ignition key for you. In free air the spark plug gap poses a very small load to the coil. 2.1 The live and neutral wires; 2.2 The fuse; The three pin plug . Touch the metal box instead of the ground wire with the second lead. Jan 28, 2018 5 0 1 35. I had the vehicle … Are yours bound together? 93foxbodygt New Member. I opened the hood and looked, I noticed the 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. Remove the spark plug wire from the spark plug and make sure it will not touch the spark plug. I have the little plastic clips, but the boots shoot em up over the headers into the clips though. SteveC . The ignition coil has an insulated wire that connects it to the metal armature from one tip of a spark plug. Share this post on; Digg; Del.icio.us; Technorati; Twitter ; Facebook; Reddit! Somebody with a medical condition could even be seriously injured by the amount of juice flowing through a plug wire. $7.49. By dkmcgowan, December 28, 2015 in MJ Tech: Modification and Repairs. 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. Spark plug wire touching headers. 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. Cables must be connected to metal boxes with an approved cable clamp. Not always. but if the bike is running fine then i would say dont touch the wire while its running. Thexton THE404 Spark Tester 4.6 out of 5 stars 219. But the secondary ignition Voltage is about 16,000 volts DC. Quality spark plugs wires shouldn’t arc to ground. Spark plug wires which are too close together can INDUCE spark in each other. so I called Mallory (I have Pro Sidewinders) and they seemed to think 1/2" would be enough with the ceramic headers but I … To explain in detail, you should be familiar with the concept of dielectric strength. Mustang Forums . 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. [This message has been edited by Blacktree (edited 09-16-2015).] The armature is then mounted on an engine frame that is found near the spinning flywheel. dkmcgowan. This will demand a different style of spark plug wire. Aug 20 2013, 11:32pm. Early spark plug wires were very simple—just metal that conducted. At that point, you created a more desirable path to ground and "the spark" aborted its journey. There is enough voltage there to give you a painful jolt. Also known as carbon core wires, they were the standard on about 95 percent of American vehicles before 1980. Share Followers 3. Engine Miss. Remove one of the wires from the spark plug. Reply to this topic; Start new topic; Recommended Posts. 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. In metal boxes, the sharp edges can cut the insulation on the wires. The problem with this is some, if not all the wires will be touching something hot. There wasn’t even insulation. 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. spark plug wire touching header. 9. $28.85. (19) 19 product ratings - Ultra 40 Spark Plug Wires Chevy SBC 350 383 400 Under Header HEI 73686. So if you have two or more spark plug wires in close proximity, "immobilize" them with plug wire separators, or zip ties, etc. 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 … Mines an 83 though. A spark plug wire is a basic but critical engine component. 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. User Info. Do they run, parallel, nearly touching? 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. Watch this video to see how you can replace a bad spark plug wires. The wires. On a separate note. Joined Sep 29, 2010 Messages 2 Reaction score 0 Points 0. The carbon … Posted December 28, 2015. dkmcgowan. That includes rubbing on each other. Larger plastic boxes are required to have built-in cable clamps and the cable must be stapled within 12 in. Comanche Aficionado; Members; 284 posts; Location: Atlanta, GA; Share; Posted December 28, 2015. Even with the high cranking amps, the 12 volts DC is harmless. Did some one pierce them with a test probe? 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. Send Private Topic View Profile . Remove the spark plug, preferably with a spark plug socket. you might see the wire arching to ground. Carefully attach the wire back to the spark plug you removed. 03-27-08 01:08 PM - Post# 1397988 I just installed the Hooker comp headers (ceramic) on my BB. The404 spark tester 4.4 out of 5 stars 219 Post on ; Digg ; Del.icio.us Technorati! 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