For now, know that distributed resistance type wires have a resistance value of 3,000 to 12,000 ohms per foot. Is there a measurable benefit to replacing spark plug wires? By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. The arc was going between a plug wire and the radiator hose, about 6-8 inches from the coils? It carries the high voltage (30k to 50k volts) produced by the ignition coil to the spark plug. Copyright (c) 1999, C. Pennock [This message has been edited by cmechmann (edited 02-15-2014).]. I am getting all kinds of spark arcing on the valve covers and the headers. And we used it until newer, cheaper compounds came out. Plugs gapped to .045. Most likely it's the boots. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Not exactly a glow, but tiny barely visible discharges that do not shock. 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. The parts store told me that there was no guarantee since it was an "electrical component". There was also a spark right on one of the bolts holding in the distributor cap. 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. But the actual resistance per foot isn’t important. 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. 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. As the descriptor implies, the construction of these wires is achieved when a very fine wire is wound around the core. I started it up and heard arcing sounds. After the other compounds came out, we used it on wires until it was just sold as silicone grease. I would increase the wire diameter if it was wire change time and your application will accept the larger size wire, otherwise I would consider it normal. What might happen to a laser printer if you print fewer pages than is recommended? How often should spark plug wires be replaced? When I remove the heat shield from the boot, there is no arcing. It has a new MSD distributor. Sprayed water LIBERALLY whenever I could see wires and saw some minor arcing at some places. Abrasion damage – When spark plug wires rub against engine parts, particularly sharp edges, it causes cuts and breaks in the insulation. Also I put dielectric grease on all the plug wires and they’re still arcing. Are fair elections the only possible incentive for governments to work in the interest of their people (for example, in the case of China)? to kill the plug(s) while it’s under compression. Seems I remember a customer in a similar situation and the spark plug wires were arcing internally to the tube. Use the digital multimeter, set to Ohms Ω. Do black holes exist in 1+1 dimensional spacetime? To carry such large voltages, plug wires need to have some basic physical characteristics. 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. Is there logically any way to "live off of Bitcoin interest" without giving up control of your coins? A bad spark plug wire will have much more resistance than another wire of equal length. If wires are working correctly, you shouldn't be seeing any signs of electrical leakage. So, I had some arcing from the base of my spark plug wires to the block. The rubbery stuff on the outside is called an insulator. Product Availability: In stock and ready to ship. Joined: Mar 10, 2004 Messages: 44 Likes Received: 0. Making statements based on opinion; back them up with references or personal experience. 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. Got new wires coming in tomorrow. It's still arcing. Types Of Spark Plug Wires. If the insulation is cracked, the spark will jump off the wire, or arc, onto something metal under the hood. Took it back and they told me that the rear spark plug wire to the back cylinder was “arcing.” What made it dangerous was that it was arcing to the fuel rail. You can slide the boot on the wire but move it only about 1/8" at a time. INTRODUCING FLAME THROWER MAGX2 SPARK PLUG WIRES WITH BLACK CERAMIC BOOTS FOR UNIVERSAL AND GM LS APPLICATIONS! saint paul, Minnesota. I saw a few different spots of blue arc. Looking for the title of a very old sci-fi short story where a human deters an alien invasion by answering questions truthfully, but cleverly. Why are some Old English suffixes marked with a preceding asterisk? Mercedes-Benz Roadster Forums. All 4 plugs should look about the same. A quick rundown on my car: 91 LX 5.0l. It was my understanding that GM included the metal boots to prevent spark plug arc. Jump to Latest Follow 21 - 32 of 32 Posts. This normally means a defective spark plug or there is something going on inside that cylinder(s) (low compression, too rich, coolant, etc.) Brand new red Ford Racing plug wires … This was reminiscent of the fuel rail recalls that plagued the Razor line and cost Polaris $20 million or so a few years back. Spark plug wires should not be in contact or within 1/2" of any ground plane. There are (basically) three different types of wires: You can only measure the resistance on the Distributed resistance type. Changed the cap, rotor and spark plug wires and battery. You can test some wires by doing a resistance check. Is it normal for the wires to have this extremely slight arcing, or is this a sign of an ignition system problem? Was told it was caused by the amount of carbon that was used in the manufacture of the rubber. Spark plug wires arcing. 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). Could a dyson sphere survive a supernova? I gap my plugs for points ignitions to .035, and for HEI to .045. The car runs fine and smooth, just with a very mild +-25RPM-50RPM bump/dip every now and then at idle. this is possible when you change your plugs without changing your boots and/or wires. I got it all back together started it up and noticed it has a rough idle but if you give it gas it clears up and runs grate it is setting code P0303 so I swapped plug By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. The engine didn't seem to react to this at all (no misfire) and the wires seem to be in a good condition - checked multiple times and haven't found a single crack. Spinoff / Alternate Universe of DC Comics involving mother earth rising up? Does electron mass decrease when it changes its orbit? Fill a spray bottle with water and spray all along the wires. Touching wires at this time should not shock you, but again, you may see corona. 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. And there are no codes. 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! Real-Time Chat | Fiero Related Auctions on eBay Then compare the resistance values. – Fred Wilson Nov 12 '16 at 8:07 Why it is more dangerous to touch a high voltage line wire where current is actually less than households? Like 3 months for summer, fall and spring each and 6 months of winter? It was jumping from the spark plug boot cover to the fins. Basically, there are three spark plug wire types, but more on that later. I could have sworn they were all the way on. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. The arcing still continues, but the car still runs fine. This winding is typically an alloy made of copper, nickel, and/or tin. 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. Joined: Oct 29, 2005 Messages: 59 Likes Received: 0. 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. What's New; Forum Listing; Showcase; Gallery; Advanced Search; Members; FAQ; Dark Mode View Mode Menu Log in Register Home. That is the obvious dead end for the spark. Before the white grease. Probably pretty old, but the insulation looks great. It sounded like it's being starved of fuel. Switch off power at the power point and then withdraw the plug - do not yank the plug free by the cord. Visible arcing from open end of spark plug wire boot to head around spark plug on one of the two cylinders. Make sure the spark plug wires are not arcing to any ground plane such as an exhaust manifold, engine bracket, heater hose, etc. Sparking at the plug can occur when you attempt to unplug an appliance while the power to it remains switched on. Prev. Thanks. Looked cool as hell with the shop lights out. Is there a phrase/word meaning "visit a place for a short period of time"? It’s the consistency of the readings between each wire that determines if the spark plug wire is good or bad. Replace your spark plugs. What has been the accepted value for the Avogadro constant in the "CRC Handbook of Chemistry and Physics" over the years? Follow these steps to remove worn spark plug wires, replace them with new ones, and improve performance. Being new plugs, they may not have acquired a healthy tan color yet, but should not be black. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. 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. Before the metal powdered stuff. I just put a new Blueprint engine in last summer. When I connected all back and started to the bike, everything seemed fine. Tools Needed: Digital multimeter. Spark plug wires are a critical link in a vehicle's electrical system. 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. The wires don’t look burnt and there is no cracking. Crack the engine and check for a good spark at the spark tester. Rolme Jr. Dragster. the rubber boots of the wires and coils are supposed to be soft so they can fit perfectly on the spark plug, but if you don't change them and they're hard or cracked after some tens of thousands of miles, it allows the possibility of arcing just like you're having. So I got a set of Clewett's from out host. Which allowBackup attribute is useful to understand if an app can be backup? 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. Spark plug wires deliver thousands of volts (up to 50,000 or more) to the spark plugs. If one appears different than the other 3, that could indicate an issue. Checked under the hood in a dark place for arcing. After reconnecting the wire to SP, engine doesn't die anymore, but still arcs sometime and on every WOT(wide open throttle) it … The arcing still continues, but the car still runs fine. It’s important to keep an eye on your spark plug wires to avoid subsequent engine issues. Look closely with a bright light and it can usually be seen. When the arcing happens on the plug insulator there is also a corresponding carbon track on the inside of the spark plug rubber boot. R/C107 SL/SLC Class. Or, is there something else I should watch out for? I've been doing the spark plug "thing" for 45 years. It has almost 500 miles. 8 0. Am I right & the plug wires are just used up? To carry such large voltages, plug wires need to have some basic physical characteristics. I see polaris plug wires are about $25 each. The wires are original AC Delco. – Fred Wilson Nov 12 '16 at 8:07 I am sure the wires are original AC Delco. Rolme, Mar 27, 2006. The metal wire shields are still on. To learn more, see our tips on writing great answers. I'm using Taylor 8mm wires, and have no issues with them. 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. PerTronix Spark Plug Wires. MAG and fixed resistor spark plug wires have much lower resistance per foot. Anything that arcs or emits a hot smell should be investigated. New rubber is needed, the black stuff on the insulator is burned rubber from the boot. Watch this video to see how you can replace a bad spark plug wires. 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. ], [This message has been edited by Patrick (edited 02-16-2014).]. Posted by asian_kaiGST, Oct 2, 2009. New wires didn't do it. At least they look cool! This applies only to carbs. This happened because it was wet and the cap … Here’s a guide for installing new wires if it’s time for replacements. The inductance (MAG) and fixed resistor have other variables in play which would not allow you to do this. It is called CORONA. Alum Z heads w/FPA headers. I sprayed the coilpack (12v VR6). Remove the spark plug wires to the distributor cap one at a time and put die electric grease on the terminals and then put the spark plug wires back on. I seems that if you have spark leakage in the coil and sparkplug cables, there must be a lot of resistance in your system. If you haven't you might try checking on one of the new wires you bought. That’s your signal that it’s time to change spark plug wires. Download Load Sheet 302DZ, Autogear M22, Red w/black stripes. Spark is going to take the least resistive path and headers make a great ground, especially with a bad spark plug boot. Resistance Test . Sprayed water LIBERALLY whenever I could see wires and saw some minor arcing at some places. The idle quality never changed, at least not enough I … Forums. Thanks, everyone. Hi, a couple months ago I bought this 45 dollars set of spark plug wires (V6 engine, 1993 Nissan Quest). Or, is it likely that the plug itself is buggered? After probing around, I heard some arcing noises, checked the spark plug area and found the SP wire is arcing. As I put my head closer to the engine to try to hear where it was coming from I could see some small blue arcing between the cooling fins on the cylinder head. 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). Joined Sep 18, 2009 . The spark plug wires are stock, so for higher diameter I'd have to go aftermarket. New rubber is needed, the black stuff on the insulator is burned rubber from the boot. 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. This applies only to carbs. I apologize. There was no arcing whatsoever with dry wires. 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. A premium store-brand plug wire set should be OK. A spark plug visual inspection can tell a story and is good for combustion diagnosis. Spraying water on the leads makes no difference. After noticing the arcing I went to NAPA and bought a Standard brand ignition coil - which *seemed* to stop arcing. 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. It only takes a minute to sign up. The car runs fine and smooth, just with a very mild +-25RPM-50RPM bump/dip every now and then at idle. Engine stumbles with the frequency of arcing. I did use anti-seize on the new plug threads and dielectric grease on the plug wires. Look at the spark plugs them selves is there a small black line appearing running up the ceramic portion. I changed up the wires for a nice Bosch set and the plugs with some AC Delco brand plugs. They don't seem to be causing me problems so I will keep them for a while longer. I changed the optispark, coil, plugs (TR6) and went to OTVC MSD wires a couple months ago so everything is pretty much new. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Had this happened to me out on the road things could have been incredibly hazardous. I have replaced every sensor and solenoid I can find. Like what was posted, need to get some air gap there or some type of insulation. Running Clewett spark plug wires, with MSD Streetfire and MSD blaster coil. It was arcing between two of the Black Rubber boots that go onto the 6 tips of the coilpack. If you have an open (internally broken wire) spark plug wire, then you will eventually fry the coil pack. 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 happens only at WOT. As of now, I've had no problems with the spark plug wires. I gap my plugs for points ignitions to .035, and for HEI to .045. Creating directories and files recursively with bash expansion. Once it warmed up I could hear a small crackling sound. #2 – Hard starts When your car refuses to start, it might not a battery fault but, a bad spark plug wire. My '84 was running fine with original wires, but they were old and needed to be replaced. 12,865 Posts #2 • Jul 25, 2019. 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. Absolutely. Page 2 of 2 < Prev 1 2. Spark plug wires don’t last forever. Start the car and get out of it, open it and try to locate where the sound is coming from. How was OS/2 supposed to be crashproof, and what was the exploit that proved it wasn't? This can cause either a partial firing of the connecting spark plug or a complete failure to ignite. carbon tracking yes that is it only seen it a few times but it does happen. I replaced the plugs with NGK and the coils with Denso. Checker Auto states: You can test some types of spark plug wires with an ohmmeter. Dan, blacktree what wires are you using and have you had any heat related problems. But if they are molded on the wires, you might need wires too. If I missed where you already did this etc. Can a planet have asymmetrical weather seasons? This was after 1 year of sitting in a field whilst I was away on assignment. You will want to focus your spray near the boots that attach to the spark plugs to see if any arcing occurs there. The arc is very small and where the metal shield touches (or almost touches) the block. ). After 1-1/2 turns of the starter the 5.7 fired right up and was purring like a kitten. But back then it was used because it did have some thermal conductivity. Basically, there are three spark plug wire types, but more on that later. It seems almost as if something is shorted and when water is getting on it, it's sending electricity along the OUTSIDE of the electrical system. 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. ------------------ DARN Cars now open with Over 30 years wiring experience between cars and trade as an avionics technician in both Canadian Air Force and civilian aviation.Over 25 years experience building and modifying cars.Over 10 years of full Fiero engine swaps and harnesses building and still going.