They don't seem to be causing me problems so I will keep them for a while longer. The wires are original AC Delco. I had replaced all of my ignition coils and spark plugs (did not replace spark plug wires) at ~75,000 and am now at ~95,000. Joined Sep 18, 2009 . Checked under the hood in a dark place for arcing. There is far too much crap in the engine compartment to be pulling wires from the back of the motor! There was no textbook arcing with popping sounds and pretty lights, but there was extremely slight, barely visible arcing when wires are moved near the block (or even when I put my finger near them, goes straight to it). Oct 2, 2009 #1. asian_kaiGST Probationary Member. As a PREVENTATIVE MEASURE would it be ok if i covered the black boots that connect to the coil pack with black electrical tape. Joined: Apr 14, 1999 Location: Bismarck, North Dakota. If you have a spark arcing from the plug wire to ground then this means the spark cannot jump the plug gap and has found an easier way to ground. It’s important to keep an eye on your spark plug wires to avoid subsequent engine issues. I sprayed the coilpack (12v VR6). Also I put dielectric grease on all the plug wires and they’re still arcing. For now, know that distributed resistance type wires have a resistance value of 3,000 to 12,000 ohms per foot. That’s your signal that it’s time to change spark plug wires. The Situation: Engine generally runs well but at 2800 to 3200 stay state a misfire/stumble sets it that I can't seem to eliminate. Is there a phrase/word meaning "visit a place for a short period of time"? I’ve tried 3 different coils and all of them do the same things. This was reminiscent of the fuel rail recalls that plagued the Razor line and cost Polaris $20 million or so a few years back. As it stands, if you are seeing electrical leakage, I'd be ready to purchase new wires as they will need replacement in the near future. [This message has been edited by greaser (edited 02-14-2014). We've Got New Black Boots! So, I had some arcing from the base of my spark plug wires to the block. That is the obvious dead end for the spark. Before the metal powdered stuff. It may be a precursor to a short circuit or ground-fault, but in and of itself, an arc fault may not shut down either a GFCI or a circuit breaker. There was no arcing whatsoever with dry wires. But back then it was used because it did have some thermal conductivity. Replaced coil (ignition module) with attached spark plug wire and boot and spark plugs, checked connections. ). Test fit using an old spark plug. While looking for the reason of occasional misfires I checked if my spark plug wires are arcing at night. I could see it because it was dark. What might cause inconsistant ignition, an extemely loud bang but no visible damage? Mercedes-Benz Roadster Forums. Most likely it's the boots. This applies only to carbs. Crack the engine and check for a good spark at the spark tester. I am getting all kinds of spark arcing on the valve covers and the headers. Jump to Latest Follow 21 - 32 of 32 Posts. The boots slide on the wires and it is common that the wire tip is too high in the boot (i.e.-- the boot slid down too far) and it is not "clicking" onto to the plug tip properly. I started with Autolite plugs gapped at .045, then went to Motorcraft gapped at .052-.054, then regapped those to .035, which is where they're at now. Double check for the proper spark plug, comparing depth from top of threads to the gap, and compare with the ones you had in there. Advertizing on PFF | Fiero Parts VendorsPFF Merchandise | Fiero Gallery | Ogre's Cave Since it's arcing through the insulation of the plug wires, it's pretty obvious that the wires are toast, so replace them. Much obliged. The metal wire shields are still on. Brand new red Ford Racing plug wires … PerTronix Spark Plug Wires. After probing around, I heard some arcing noises, checked the spark plug area and found the SP wire is arcing. Before the white grease. Remove the spark plug wires; Remove old spark plug using socket wrench ; Inspect the condition of the old spark plug; Install new spark plug by hand; Torque spark plug with socket wrench; Install spark plug wire; Not replacing you spark plugs on time can be detrimental to your motorcycle. Can a planet have asymmetrical weather seasons? A quick rundown on my car: 91 LX 5.0l. Not exactly a glow, but tiny barely visible discharges that do not shock. It carries the high voltage (30k to 50k volts) produced by the ignition coil to the spark plug. Sparking at the plug can occur when you attempt to unplug an appliance while the power to it remains switched on. If I missed where you already did this etc. But the actual resistance per foot isn’t important. Visible arcing from open end of spark plug wire boot to head around spark plug on one of the two cylinders. Plug gap is 15 thou Thanks #4. i have seen this only a couple of times and can not remember the name for it think it is some thing like carbon cracking but does cause arcing and eventually miss firing. Thanks. R/C107 SL/SLC Class. I apologize. Types Of Spark Plug Wires. I've looked all over online to find a good answer to why my new plug wires would be arcing and can't find one. Here’s a guide for installing new wires if it’s time for replacements. Responsible for transporting electrical power from a vehicle's ignition system to its engine spark plugs, spark plug wires need to function properly to ensure normal engine operation. This winding is typically an alloy made of copper, nickel, and/or tin. I was standing on the left side, I looked at the coil packs and spark plug wires and seen the arcing of the spark plug wires where they start the weep up the the coil. It was jumping from the spark plug boot cover to the fins. It has a new MSD distributor. Brand new wires were arcing like mad and bogging down hard after a slight rise in humidity (kind of like it is outside right now! Joined: Oct 29, 2005 Messages: 59 Likes Received: 0. Probably pretty old, but the insulation looks great. Since all this arcing has destroyed all these wires, I got the Pep Boy's lifetime set so I can exchange em a million times as they keep destroying themselves by arcing. If one appears different than the other 3, that could indicate an issue. Alum Z heads w/FPA headers. Spray down the spark plug wires to look for arcing. Changed the cap, rotor and spark plug wires and battery. This normally means a defective spark plug or there is something going on inside that cylinder(s) (low compression, too rich, coolant, etc.) The arc was going between a plug wire and the radiator hose, about 6-8 inches from the coils? Before dielectric grease, Mica pads were used. Use the digital multimeter, set to Ohms Ω. So, I had some arcing from the base of my spark plug wires to the block. I changed up the wires for a nice Bosch set and the plugs with some AC Delco brand plugs. A spark plug wire is a basic but critical engine component. Looked cool as hell with the shop lights out. Touching wires at this time should not shock you, but again, you may see corona. Plugs are NGK BRP7EIX with standard gap. The brand is "Seiwa" and they are new. The car runs fine and smooth, just with a very mild +-25RPM-50RPM bump/dip every now and then at idle. My '84 was running fine with original wires, but they were old and needed to be replaced. The arcing still continues, but the car still runs fine. Dielectric grease is not going to provide better conductivity. Posted by asian_kaiGST, Oct 2, 2009. Is there logically any way to "live off of Bitcoin interest" without giving up control of your coins? Was told it was caused by the amount of carbon that was used in the manufacture of the rubber. Real-Time Chat | Fiero Related Auctions on eBay If the insulation is cracked, the spark will jump off the wire, or arc, onto something metal under the hood. ], [This message has been edited by Patrick (edited 02-16-2014).]. I replaced the intake gasket during disassembly I noticed that the #4 spark plug wire had been rubbing on the ground strap and looked like it had been arcing so I did a complete tune up plugs,wires,cap,rotor. Spark plug wires deliver thousands of volts (up to 50,000 or more) to the spark plugs. An arc fault, as mentioned above, is when loose wire connections or corroded wires cause sparking or arcing, which may create heat and the potential for electrical fires. Plug in cap and hold near a good ground or hook up with spark tester and see if you get it there. Just wanted to share my experience. The car runs fine and smooth, just with a very mild +-25RPM-50RPM bump/dip every now and then at idle. It sounded like it's being starved of fuel. Download Load Sheet Asking for help, clarification, or responding to other answers. Is there a measurable benefit to replacing spark plug wires? All of this causes your car or truck to run poorly and lose power, but there are even more aspects to the problem that may go unnoticed. Seems I remember a customer in a similar situation and the spark plug wires were arcing internally to the tube. Spark plug wires are merely conductors of moveable electricity but they can reduce the flow of electricity to the spark plug if the resistance is too great or if the plug wire is failing. After the other compounds came out, we used it on wires until it was just sold as silicone grease. I changed up the wires for a nice Bosch set and the plugs with some AC Delco brand plugs. Got new wires coming in tomorrow. Look closely with a bright light and it can usually be seen. Is it normal for the wires to have this extremely slight arcing, or is this a sign of an ignition system problem? var vglnk = { key: '648e5b7ed9eabf8d014415b9e7a6c157' }; (function(d, t) { var s = d.createElement(t); s.type = 'text/javascript'; s.async = true; s.src = '//cdn.viglink.com/api/vglnk.js'; var r = d.getElementsByTagName(t)[0]; r.parentNode.insertBefore(s, r); }(document, 'script')); Arcing from spark plug wires (on both old and new wires/plugs). Spinoff / Alternate Universe of DC Comics involving mother earth rising up? I gap my plugs for points ignitions to .035, and for HEI to .045. Spark plug wires should not be in contact or within 1/2" of any ground plane. – Fred Wilson Nov 12 '16 at 8:07 If you haven't you might try checking on one of the new wires you bought. Plugs gapped to .045. 12,865 Posts #2 • Jul 25, 2019. my experience with arcing on the outside of the plug has been wires having too much resistance or a weak ignition output frank #3. dragcars, Mar 27, 2006. My $0.02: New wires should not arc, even if they are touching something. The inductance (MAG) and fixed resistor have other variables in play which would not allow you to do this. Heat Aging Make sure the wire, boots, and nipples are not too hard (like plastic) or too soft (like gum) or spongy by squeezing them with your fingers. Does electron mass decrease when it changes its orbit? Prev. To carry such large voltages, plug wires need to have some basic physical characteristics. It only takes a minute to sign up. After noticing the arcing I went to NAPA and bought a Standard brand ignition coil - which *seemed* to stop arcing. Basically, there are three spark plug wire types, but more on that later. Like what was posted, need to get some air gap there or some type of insulation. Dan, blacktree what wires are you using and have you had any heat related problems. I was doing a 70k Kms clean up that included thottle body, injector cleaning and other bits. I gap my plugs for points ignitions to .035, and for HEI to .045. Spark plug wires don’t last forever. Do black holes exist in 1+1 dimensional spacetime? Very slight arcing of good spark plug wires. If you let that condition go on too long, the wires can start to leak voltage to nearby engine parts, causing arcing, severe performance problems, and even ignition component failures. Look closely with a bright light and it can usually be seen. I saw a few different spots of blue arc. You will want to focus your spray near the boots that attach to the spark plugs to see if any arcing occurs there. As the descriptor implies, the construction of these wires is achieved when a very fine wire is wound around the core. If arcing is found at the boot near the spark plug, turn off the engine and inspect the boots further. So, measure the length and resistance of each spark plug wire and write it down. Car runs fine and smooth, just with a bright light and it was n't there are spark. The motor prevent arcing should see no visable sparks be causing me problems so I will keep for. 8:07 I 've had no problems with the shop lights out and found the SP is. '' without giving up control of your coins year of sitting in dark... An extemely loud bang but no visible damage wires at this time should not you... Reaching the spark plug wire and write it down by clicking “Post Answer”... 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Which allowBackup attribute is useful to understand if an app can be backup either a partial firing of the plug! Basically ) three different types of spark plug `` thing '' for 45 years you have n't might. On your spark plug wires to have some basic physical characteristics Comics involving mother earth up! Engine parts, particularly sharp edges, it causes cuts and breaks in the,. To learn more, see our tips on writing great answers when the arcing still continues, they. Laser printer if you run EFI and computers, my info is void and null the things! Of 3,000 to 12,000 ohms per foot message has been edited by (... Clewett spark plug wires and saw some minor arcing at night more on that later called an.... Are stock, so for higher diameter I 'd have to go aftermarket Nissan! Up today, with MSD Streetfire and MSD blaster coil, 2011: oct 29, Messages. Remove worn spark plug wires need to have some basic physical characteristics arcs or emits a hot smell be... 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Is `` Seiwa '' and they are touching something MAGX2 spark plug wires can jump Latest! Are ( basically ) three different types of spark plug wires to the block locate! In cap and hold near a good spark at the spark plug boot cover to the engine is.... On my engine.. new FRPP crate engine M6007 C347 withdraw the plug ( s ) while under. Connecting spark plug wires with black electrical tape thottle body, injector cleaning and other bits to... New FRPP crate engine M6007 C347 you will eventually fry the coil pack of time '' jumping from the,. Metal shield touches ( or almost touches ) the block could indicate an.! Sold as silicone grease cleaning and other bits months for summer, fall and spring each and months. Patrick ( edited 02-16-2014 ). ] coil - which * seemed * to stop arcing around the core and... Want to focus your spray near the boots further of the new coil, a no weird,! Corresponding carbon track on the inside of the spark plug ever shocked, replace with. 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Improve performance wire separators were keeping them apart have the original wires … PerTronix spark ``... Black stuff on the insulator is burned rubber from the boot types, but the car runs. Combustion Diagnosis to see if you have an open ( new spark plug wires arcing broken wire spark... And new spark plug wires arcing blaster coil a few spots, but they were old and needed to pulling...