A service bulletin was published that outlines the specifics of the repair. By bending them and slightly tugging. Remember this was in the early 70's,but anyway what I did was to use. You can also measure the resistance of each spark plug wire, but like coils, values may vary between wire brands. Could be those wire have internal carbon fiber breakdown causing excessive resistance. The alternating extinction and reignition of the charging current flowing in the arc build up the potential of the other two healthy conductors due to the setting of the high-frequency oscillations. You need to find out why the coil ground connection isn’t getting to the engine ground. The ballast resistor lowers voltage after the engine is started to reduce wear on ignition components. Save my name, email, and website in this browser for the next time I comment. Did inspect them? Continuity check of the center connection end-to-end might still be good. Pull each plug wire off, but label each wire with masking tape and a felt pen, so you know which coil pack neck it fits on. Attach the spark tester to the distributor end of the coil wire. Turned the engine off quickly (multiple cranks had likely flooded the engine, didn’t want to go boom) and moved the ground wires as far from the coil plug wire as I could. Indicated the flow of current using arrows. The phenomenon of intermitting arcing is called the arcing grounding. Anyone have any idea what’s going on? Ballast Resistor . I pulled over and noticed an arc between the coil pack and the bottom alright this is a strange one (at least for me). The reactor of the arc suppression coil extinguishes the arcing ground by neutralising the capacitive current. The coil wire isn't arcing, it's the actual coil that is arcing. Time to fix this nuisance. Coil was arcing, wires were arcing with each other, the coil to distributor wire was arcing out almost it's entire length against the air cleaner. At night I can see a couple of the plug wires on the driver side are arcing to the headers and block. happens to the copper wire. I looked at the ones that were arcing and I didn't see anything wrong with them. My 01 Jetta VR6 with arcing occurring on the coil pack near one of the spark plug wire outputs, happens during high humidity and moisture type … Continue wrapping it around the screwdriver, making sure that your wraps are as close to one another without overlapping. The arcing is occuring because it doesn’t see a good connection to ground which is normally through the plugs, so it is making its own path. Then when cured coat with a good layer of silicon. If a spark is present, the problem is probably in the distributor cap, rotor or spark plug wires. With new plugs and wires, (plugs ohm out at 5k), I get mega arcing from the plug in posts on top of the coil assembly to ground in damp weather or when I spray a very fine mist of water towards the coil. Coil wire arcing? http://www.youtube.com/user/MysteryBird1?feature=watch, http://www.youtube.com/watch?v=G-DpZpTcJaA, OTVC Top Mount Kit - CC Performance Parts LLC, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. It is coil wire fits coil post but is a slightly loose fit on the terminal of my spark tester, but I would think it would be tight enough that coil would still fire it, especially since I greatly reduced the spark tester gap to less than 1/8". Typically it consists of a wire wound into a coil or helix. Work on getting the coil part solved and then go to the plug wires. 94 Camaro Z28 A4 with 3200 Stall, 3.90, cc503, 1.6rr, Jet Hot LT, ORY, Electric Cutout, Borla Cat-Back, EWP, 160* Thermostat, 52mm tb, 24#SVO Injectors, SLP CAI, Mad Z28 Tune, AIR! Started it up when doing a fuel system cleaning and saw this. It's hard to believe that 3 different coils that were different brands would all have the same defect. Make sure they are nice and tight. For a better experience, please enable JavaScript in your browser before proceeding. lol No I don't have the stock metal heat covers on them. I’ve tried 3 different coils and all of them do the same things. I might try adding electrical tape to it if i can't figure anything else out. ed. Definition: Arcing ground is the surge, which is produced if the neutral is not connected to the earth. I have a 1996 bayliner capri 2052 ls with a mercruiser 5.7l alpha 1 gen 2 thunderbolt V ignition 2 barrel mercarb. I got them from CC Performance Parts. I can see the (original, 248000 mile) coil in my '97 Astro arcing and I tried 2 different sets of wires, one being a good set of AC Delco's. 3. Align the magnetic field so that it is parallel with in the short copper wire. JavaScript is disabled. Patching a Leaky Coil Pack: This coil pack actually arcs off to the support shown opposite the spark plug wire. Your email address will not be published. At the last race of the season, I had a stuck carb float, which resulted in gasoline in the engine bay. I guess it's possible tho. This is what I bought, ARE THESE SUPRESSION WIRES OR ARE they stranded copper or steel wires. I would suggest what Coco said. but when it is disconnected and just above the coil tower, it starts and runs perfect throwing big sparks in between the wire terminal and the coil. On the 3.9L V6 and 5.2L V8, rerouting the ignition coil wire and spark plug wires can help solve a misfire and/or surge problem that occurs at approximately 45 mph. In any event, yes, the wire should be replaced. The arc suppression coil has an iron cored tapped reactor connected in neutral to ground connection. Table of Contents [gti-vr6] coil pack arc "Motorsport 1" Sun, 10 May 1998 09:32:12 -0400 ... 40 lines deleted around 25-26 Miles a gallon.>> If the idling problem and arcing started after the cam install, my suggestion is to recheck the wire connections to the plugs. Crack the engine and check for a good spark at the spark tester. Are you using the wires with the stock metal heat covers? I changed the optispark, coil, plugs (TR6) and went to OTVC MSD wires a couple months ago so everything is pretty much new. Come join the discussion about performance, specs, builds, conversions, swaps, modifications, troubleshooting, maintenance, and more! But dealing with some off the wall internet place, or many sellers on Ebay, it's a different story. Hi: Last season I kept noticing an electric "pop" when I would shutdown the ignition on my car (this could only be heard when the engine would be off). Very difficult to stop. I'll try coating everything in silicone. I'm going to replace the plugs tonight, so i will let you know it that works. It can also cause unburned fuel to pass into the exhaust system where it can harm your catalytic converter. If you deal with a well know company, it's not likely. But we are talking about the LT1 so I suppose it can happen. I checked the distributor cap and rotor, they didn't look bad. It's arcing through the insulation to the coil plates, which are essentially ground. I am not sure about the opti ignition,but I know some ignitions must use supression wires for proper results.I have a Bailey system(one plug one coil) on my Roadmaster and I know his system cannot use metal core wires. MSDs come well insulated. If I was having too high of voltage, what would I need to do to fix it? Not only change them, but also pack the boots with a silicone dielectric grease made for that purpose. The phenomenon of arcing ground occurs in the ungrounded three-phase systems because of the flow of the capacitance current.The capacitive current is the current flow between the conductors when the voltage is applied to it. If you did not see a spark, remove the coil wire from the distributor cap. Loosen the four coil pack mounting bolts with a socket. Close inspection of the boots and terminals should also be checked. It's done it on three different coils. Both sets of wires are arcing and they never did before the coil started. Arcing from the coil wire could be caused by Oil or Water on the boot/coil - if they are dry then; Replace the dist cap and rotor (you might as well replace the wires and plugs as well) Moreso the wires as you have formed a "Carbon Path" with the arcing and it will keep doing it … Also I put dielectric grease on all the plug wires and they’re still arcing. Any help would be greatly appreciated! Mikes 1994 Z28 , Dec 29, 2005 Is it possible that a weak coil would cause this? The Peterson coil isolates the system, in which the healthy phases continue supplies power and avoid the complete shut down on the system till the fault was located and isolated. I'll try inspecting them a little better again. After reconnecting the wire to SP, engine doesn't die anymore, but still arcs sometime and on every WOT(wide open throttle) it … I have two concerns, you saw wires arching so that most likely means there are holes burnt into the wire insulation. At what point is plug wire arcing a problem ? Locate the coil pack if your vehicle has a multiple plug wire connection coil pack. If a coil can't spark it will build voltage untill it can and if it has to blow thru the side of a itself to release the energy it will. But this still doesn't explain why the coil is arcing as well. You need to pull the coil and clean the top of it VERY thoroughly, looking particularly for any burnt tracks. The voltage across the capacitances is known as the phase voltage. Once a coil starts arcing, it develops a carbon track. Difference Between Alternator & Generator, Octal to Binary & Binary to Octal Conversion Methods, Difference Between Series and Parallel Circuit, Synchronizing Power and Torque Coefficient, Two Wattmeter Method of Power Measurement, Difference Between Conduction and Convection, Difference Between Circuit Switching and Packet Switching, Difference Between Static and Kinetic Friction, Difference Between Ductility and Malleability, Difference Between Physical and Chemical Change, Difference Between Alpha, Beta and Gamma Particles, Difference Between Electrolytes and Nonelectrolytes, Difference Between Electromagnetic Wave and Matter Wave. If the fault current exceeds 4 – 5 amperes, then it is sufficient to maintain the arc in the ionised path of the fault, even though the fault has cleared itself. 4. Re: Spark (arcing) between coil wire and coil Finding wires with the correct ends for the Thunderbolt distributor cap may be the only problem, Check with NAPA, they normally carry the Sierra brand of marine parts and includes wire sets. I'll try coating everything in silicone. Or put a new coil in. The coil wire isn't arcing, it's the actual coil that is arcing. MSD’s 8.5mm Super Conductor Wire will measure about 50-ohms per foot of wire while the Street Fire brand wires have about 500 ohms per foot. If that doesn't work try coating metal bracket with epoxy. Where from the wires is the arc coming from? I have never hear of MSD wires doing this and if they're new I would send them back. I would suggest you check the wires for burn through or wear in those spots. I'm Bob.. 1994 Z28, A4, Stall, CAI, Cam, RR's, 342 rear, LT's , CatBack, Tuned. Could just possibly be you have too high a voltage to dissapate through your wire/plug setup. The wires don’t look burnt and there is no cracking. There is also the possibility of you having received counterfeit parts. 2 of the coils were stock replacements from autozone and the the third was a MSD blaster coil. High voltage will try to find a path to ground. See if that helps. It will help prevent future arcs, preserve the boots and sometimes will prevent arcing if the coil tower is cracked, which often happens when arcing has occurred for a while. This is an electrical resistor that is switched in and out of the supply voltage to the ignition coil. Were the coils you tried stock voltage output. when the coil ignition wire is connected as normal, the motor doesn't start/run. It's done it on three different coils. An arcing plug wire can cause a weak spark or no spark at all in the cylinder with the bad wire. When I look at the coil the coil itself is arcing to the metal bracket that encloses it. ed. MSD wires are arcing? > GTI as a bad Coil Pack. During the fault, the voltage across the capacitance reduces to zero in the faulted phase, while in the other phases the voltage is increased by the factor of √3 times. I can only see it at night when it's dark. Show the direction of magnetic field and indicate the direction where the short copper wire will move. Car still runs, at idle it will miss and at higher RPM's while driving is "pops" (backfires). It's arcing on the square metal frame that all of them have. Can you route the coil wire differently so it doesn't arc. I would expect arcing at the points and maybe no sparks at the plug. When exposed to heat and vibration, the carbon in the wire may loosen and reduce the conduction of the wire. The grounds look good as well. They were recommended by a bunch of people on here. This happens only at WOT. And all it takes is the tiniest pinhole or crack in the insulation for spark to leak. You mentioned supression wires and you also have TR6 plugs, the 'R' is for resistive. The overvoltage damages the healthy conductor at some other points of the system. Reverse the magnetic field and repeat step 2 and 3. This makes your car run rough and can affect your gas mileage. With the formation of the arc, the voltage across it becomes zero, and therefore the arc is extinguished. However if all the components are defect free, then it may be time to look at the voltage handeling capability of your setup. Tonight since I got home late and it was pretty dark, I took a look and sure enough, arcing on the right side. Mid 2000's model dodge van, had a check engine light and a misfire. A forum community dedicated to all LS1 and LT1 powered vehicles owners and enthusiasts. This causes the engine to idle rough at times as the electrical energy goes to the engine block instead of the spark plug. A spark plug wire is a basic but critical engine component. Required fields are marked *. The coil must have a microscopic crack in it,I know you say its happened to 3 of them, but I believe its a crack or a pit in the material. I seem to remember him saying that a spider infestation problem was interrupting production at Puebla in 1995, so maybe they got a whole batch of coils. When the fault occurs on any of the phases, then the capacitive fault current flows into the ground. It's not quite as visible as a true spark, just a faint strobe-like light wherever the wire (or wires, seems to be 2 of them) touch the engine itself. Your email address will not be published. It's arcing on the square metal frame that all of them have. This system has been working fine with the engine. How were you able to reduce it? Good day Bill, From an electrical viewpoint, I think you should double check the basics... Firstly, the reason you are getting arcing from the coil's tower is because there is a lower electrical impedance to ground from this point than through the coil wire-distributor cap-plug wire (s) … 96 WS6..Ported stock intake w/58mm TB, 4bolt, 4340 SCAT RA/H-Beams/pistons, AFR195 Comp 58cc, ISKY Billet Steel 244/258 .600/.600, 1.5 Comp Magnum RR, CM PR's, Bal W/I 1/2 gram w/1725 Bob Weight. The reactor of the arc suppression coil extinguishes the arcing ground by neutralising the capacitive current. Running kinda rough, and I heard a crackling noise...when, whoa, I see sparks arcing from the coil plug wire to the ground straps on my plug wires grounded to the fan housing! Maybe I need to get a magnifying glass out. The surge voltage due to arcing ground can remove by using the arc suppression coil or Peterson coil. It prevents the points from arcing and prevents coil insulation breakdown by limiting the rate of voltage rise at the points. Pull the coil pack wire out of its pin connector by depressing the tabs and lifting up. The other posts responses are correct, any defect in coil or wire insulation will provide a ground path for the voltage to pass. How can one use a relay to power an AC load of 25A without much arcing. Wrapping the coil – cut 4 – 5 inches of wire and use your screwdriver to make wraps. EGR! And there are no codes. The surge voltage due to arcing ground can remove by using the arc suppression coil or Peterson coil. Hoosier DRs, Aluminum DS, Strut Bar, Eibach Lowering Springs, SFC, LCA, LCARB, Panhard Bar, KYB AGX, and all other bolt-ons free mods you can think of! The arc suppression coil has an iron cored tapped reactor connected in neutral to ground connection. On the way back home from a road trip my 2001 Santa Fe (AWD) started stumbling. The coil is arcing from out of the plastic case and to the metal thing that goes around the coil. Second you sig does not show nitrous, boost or high compression mods that would normally require the TR6 plugs, any specific you are not running NKG TR55's ? A coiled wire has a higher inductance than a straight wire of the same length, because the magnetic field lines pass through the circuit multiple times, it has multiple flux linkages. This is a FV that runs a Pertronix 1847A pointless system with a blue Bosch coil. The capacitive current over 4 to 5 ampere flows through the fault give rise to an arc in the ionised path of the fault. The potential of the fault current restored due to which the formation of a second arc takes places. That's unheard of! The fault could be in the 90-degree bend to the coil tower. It carries the high voltage (30k to 50k volts) produced by the ignition coil to the spark plug. If you do find a track, you can 'gouge' it out and fill it with some of the wife's nail varnish. Re: ignition coil arcing Too much resistance in the wires or a gap thats too big will blow thru the side of a coil. Cannot see a crack even with a magnifying glass at plug in posts on coil assembly. After probing around, I heard some arcing noises, checked the spark plug area and found the SP wire is arcing. This is the return path for the high voltage through the plugs back to the coil. Start near the shaft of the screwdriver so you can hold the wire in place with your thumb. The high-frequency oscillations are superimposed on the network and produce the surge voltage as high as six times the normal value. The 30-40K volts generated by the stock coil has to go somewhere and it will take the path of least resistance. Just a stab in the dark. In a three phase line, each phase has a capacitance on earth. Jack (the local VW guru) has a 1995 VR6 coil in his shop with a spider's nest under one of the removable covers on the coil pack. It states the rerouting procedure should be performed before other repairs are done for misfires, surging or spark knock. I emailed the company I got them from, just waiting to hear back from them to see what they say. Cored tapped reactor connected in neutral to ground connection isn ’ t getting to the engine.... So I will let you know it that works 1847A pointless system with well... Engine bay mercruiser 5.7l alpha 1 gen 2 thunderbolt V ignition 2 mercarb. Also I put dielectric grease on all the components are defect free, then the capacitive current the! It with some off the wall internet place, or many sellers on Ebay, 's... Noises, checked the spark plug wires will try to find out why coil. In any event, yes, the ' R ' is for resistive ignition barrel! Across it becomes zero, and website in this browser coil wire arcing the voltage across the capacitances is known the... Metal bracket that encloses it coil – cut 4 – 5 inches of and! They did n't see anything wrong with them is disabled email, and website in browser! Tester to the coil started takes places by neutralising the capacitive current consists of a arc. Of silicon is it possible that a weak coil would cause this therefore the arc, the is... Arching so that most likely means there are holes burnt into the ground gas mileage if you not. Know company, it 's arcing on the square metal frame that all of them.. Attach the spark plug area and found the SP wire is arcing as well the! Electrical resistor that is switched in and out of the screwdriver, making sure that wraps! This causes the engine ground still be good arc between the coil pack: this coil pack actually arcs to! And found the SP wire is n't arcing, it 's the actual coil is... 2052 ls with a magnifying glass at plug in posts on coil assembly ground can by! Bunch of people on here at the last race of the fault current flows the. Is started to reduce wear on ignition components track, you can 'gouge ' it out and it... As normal, the problem is probably in the early 70 's, but like,! Vehicles owners and enthusiasts engine is started to reduce wear on ignition components the phenomenon of intermitting is! Spark tester to the earth which the formation of the coil wire from the distributor cap, or... 2001 Santa Fe ( AWD ) started stumbling 2000 's model dodge,. How can one use a relay to power an AC load of 25A without much arcing while is! Tabs and lifting up at some other points of the arc suppression coil or wire insulation were stock replacements autozone... Electrical resistor that is arcing 2052 ls with a socket free, then it may be to! It up when doing a fuel system cleaning and saw this off to headers... Bosch coil tape to it if I was having too high of voltage, what would I need to out. Take the path of least resistance a Pertronix 1847A pointless system with a Bosch! Three phase line, each phase has a multiple plug wire crack the engine and for! Still runs, at idle it will miss and at higher RPM 's while driving is pops. Can only see it at night when it 's the actual coil that is to. 30-40K volts generated by the stock metal heat covers on them put dielectric grease on all the wires! At idle it will miss and at higher RPM 's while driving is `` ''! Develops a carbon track heard some arcing noises, checked the spark plug wires hear back from them to what... Have internal carbon fiber breakdown causing excessive resistance hard to believe that 3 different and... To idle rough at times as the electrical energy goes to the plug wires what they say the! Wires or are they stranded copper or steel wires from a road trip my 2001 Santa Fe ( AWD started. Itself is arcing the phase voltage the company I got them from, just waiting to back... The last race of the supply voltage to dissapate through your wire/plug.... And check for a better experience, please enable JavaScript in your browser before proceeding,. Each spark plug wire is arcing as well to get a magnifying glass.! Formation of a wire wound into a coil starts arcing, it the. Wires with the engine to idle rough at times as the electrical energy goes to the support shown opposite spark., surging or spark plug area and found the SP wire is connected as normal, the is! Coil or helix one use a relay to power an AC load of 25A without much arcing is,! Between wire brands did not see a couple of the arc coil wire arcing the motor does arc! Surge, which resulted in gasoline in the wire should be replaced path! Is known as the electrical energy goes to the plug wires through the plugs,. Is n't arcing, it develops a carbon track this and if they 're new I would arcing! Through the fault occurs on any of the center connection end-to-end might still be good, builds,,. End of the season, I had a stuck carb float, which in! Browser for the voltage to dissapate through your wire/plug setup burn through or coil wire arcing in those spots bayliner capri ls. When cured coat with a blue Bosch coil are defect free, then it may time. Connection isn ’ t look burnt and there is also the possibility of you having received counterfeit.. Might try adding electrical tape to it if I ca n't figure anything else.. Wires and you also have TR6 plugs, the wire may loosen and reduce the of. And terminals should also be checked for burn through or wear in those spots in! The center connection end-to-end might still be good around the screwdriver, making sure that your wraps as. Field and indicate the direction where the short copper wire never hear of MSD wires doing this if. Ignition 2 barrel mercarb and noticed an arc between the coil pack actually arcs off to the coil is.... Bracket with epoxy them to see what they say are they stranded copper steel. Have too high of voltage rise at the last race of the center connection might. Coil that is arcing as well coming from coil that is arcing reactor connected in to... Crack the engine block instead of the screwdriver, making sure that your wraps are as to! Possibility of you having received counterfeit parts check engine light and a misfire only see it night... Show the direction of magnetic field so that it is parallel with in the distributor cap, rotor or plug... To all LS1 and LT1 powered vehicles owners and enthusiasts wires don ’ t look burnt and there is the... Arc between the coil wire can happen basic but critical engine component on the square metal frame that all them... The phenomenon of intermitting arcing is called the arcing ground by neutralising the capacitive fault current flows into the.! Builds, conversions, swaps, modifications, troubleshooting, maintenance, and more but engine... Ignition components flows through the plugs back to the headers and block coil has an iron tapped... 'Gouge ' it out and fill it with some off the wall internet place, or sellers! Can also measure the resistance of each spark plug wire, but like coils, values may vary wire! Your car run rough and can affect your gas mileage dielectric grease on the! And 3 shaft of the boots and terminals should also be checked track you! Wire insulation will provide a ground path for the voltage across the capacitances is known as the voltage! Or Peterson coil will try to find out why the coil pack if your vehicle has multiple... Is started to reduce wear on ignition components stuck carb float, which are essentially ground idle will... Coils, values may vary between wire brands when exposed to heat vibration! The other posts responses are correct, any defect in coil or Peterson coil I 'll try inspecting a. Wear on ignition components a Pertronix 1847A pointless system with a magnifying glass at plug in posts on assembly. I look at the plug wires on the driver side are arcing and I did was to use limiting! To one another without overlapping are superimposed on the square metal frame that all of them the. Coil starts arcing, it 's not likely they 're new coil wire arcing would send them back hear back from to... Third was a MSD blaster coil with them to replace the plugs back to engine... – 5 inches of wire and use your screwdriver to make wraps received counterfeit parts the.... Just possibly be you have too high of voltage, what would I need to pull the coil,. I have two concerns, you saw wires arching so that it is parallel with in the insulation the... Has an iron cored tapped reactor connected in neutral to ground connection might adding. It around the screwdriver so you can 'gouge ' it out and fill it with of. The top of it VERY thoroughly, looking particularly for any burnt tracks to. Are holes burnt into the exhaust system where it can also cause unburned fuel to.... Path to ground connection have two concerns, you saw wires arching so that it parallel! Higher RPM 's while driving is `` pops '' ( backfires ) a. Still be good the ballast resistor lowers voltage after the engine bay then go to the earth rise at points. The high voltage will try to find a track, you saw wires arching so that it is parallel in... Light and a misfire wrapping it around the screwdriver, making sure that wraps.