coil on plug arcing

coil on plug arcing

Be sure to inspect your plug wires when the engine is not running. The sooting that was previously on 1/4 has been cleaned off by the engine after I adjusted the mixture however are now white. Held the throttle open a little and bam the coil wire started arcing against something. And there are no codes. Morning all. Pull the coil pack wire out of its pin connector by depressing the tabs and lifting up. Truck runs fine under WOT and at an idle. Ah sorry should've mentioned I've done all the swapping over trying to get it to follow however it is isolated to 3/4. I'm pretty sure your problem is there.This just happened to me. whip all the plugs out , turn it over with coil disconnected , & rag draped over the head to stop fuel spraying everywhere. Edited by sledgehammer, 06 November 2016 - 11:02 AM. It looks like I have the pink and white wire although faded so I'm assuming thats ballasted also says resistive or something of that nature. The chipped insulation around the LT terminal is largely irrelevant. wonder if excess fuel in cyl is fowling the plugs ? Ignition Coil Arcing. Also, if the plugs are old and the gap opened up the resistance for a spark at the plug might be too high. I've had a couple of spark plugs arc or track down the outside of the porcelain lately causing the cylinder to die, looking for any input on the cause, done all the usual things plugs clean when installed, cleaned plug tools, inside of leads etc. Hi Pelicans - I had a no-start situation with my ‘83SC this weekend. For some reason it just doesn't seem like it's sparking enough inside 3/4 to get ignition (I'm only running on 2 cylinders, 3 intermittently). Got to work and got the P0301 code. I will give the cleaning a go in the morning and see how it goes. How to Test Spark Plug Wires. Get rid of those shielded cables. [gti-vr6] Coil Pack!! Locate the coil pack if your vehicle has a multiple plug wire connection coil pack. Change your spark plugs, your wires, cap distributor and rotor. When the engine is running I'm pulling the 3/4 plug leads trying to diagnose why they are not firing. is the wire bad or the coil. The spark will be taking the shortest / lowest resistance route to earth, wipe the coil nose clean & make sure LT terminals are bent away from coil nose & cond good. Opened the hood with the engine running and, I saw the Coil pack on #1 is arcing to the Cylinder head. This happens only at WOT. Or put a new coil in. 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)-and then finally the spark plug. Sometimes just using some silicone grease in the wire boot will help stop arcing . HT is the plugs leads, not entirely sure under what conditions you mean it sparks. This kit offers the benefit of more spark energy to increase horsepower and fight spark blow out under high RPM/high boost applications. Plugs had soot on them I leaned the carb out a bit checked again now 1/4 are white and 2/3 are still black. Switch off power at the power point and then withdraw the plug - do not yank the plug free by the cord. Date: Mon, 20 Jul 1998 13:58:32 -0500 : My local VW shop has finally diagnosed a really bizarre problem with my 95 GTI as a bad Coil Pack. Our coil on plug retrofit is the latest in Honda & Acura coil conversion technology (Hondarulez). That's what I'm thinking I just don't want to be changing parts just for the sake of it. plug number 5 is arcing at coil. A spark is generated when coil's field collapses, by design when the points (or electronic do dah) breaks LT the circuit. I've tried 3 differentcoils and all of them do the same things. I will change the coil as I don't think those chips are helping the cause regardless. The cause of "plug wires arcing over to ground" is always "insulation breaking down under load". If the engine starts, running for a while should either foul up the bad plugs, if they are the cause of the problem, or burn the crud off them and foul up what were the good ones if it is an engine (carburettor, manifold, valves, pistons etc) fault. When replacing the spark plugs or ignition coils, it is also a good idea to replace the boots. 2/3 are still fouled though, not as bad. The suppression coil itself becomes a source of interference and high frequency emissions. This system has been working fine with the engine. Please re-enable javascript to access full functionality. Sparking at the plug can occur when you attempt to unplug an appliance while the power to it remains switched on. The reasons for the arcing have been well explained above. Compression checked, all at 160psi. Even though provision of a spark plug lead with a suppression coil therein eliminates interference resulting from secondary arcing or discharge across the spark plug electrode, it does not completely eliminate radio interference emissions altogether. 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). I pulled over and noticed an arc between the coil pack and the bottom using MSD 44 NGK R6061-10 Plugs. Apparently the connectors to the spark plugs have cracked (or melted) which causes very tiny arcs which produces some really pronounced surging in all gears and all speeds. If carbon tracks are found, they can not be cleaned/ scraped off. I changed the optispark, coil, plugs (TR6) and went to OTVC MSD wires a couple months ago so everything is pretty much new. Not a clue what's happening to my car. A spark plug wire is a basic but critical engine component. So I'm just a loss really. Hopefully i can get a coil here fairly quickly, what would you recommend for a balasted lasted type? Gannon. If the plug doesn’t fire, usually around 26,000 volts, then the voltage will go higher until it can find a path. The voltage is determined by Ohms Law. Strong crank, spark, and fuel pump running fine. Sounds similar to what my coil was doing and that was cracked. This is a FV that runs a Pertronix 1847A pointless system with a blue Bosch coil. Edited by Moke Spider, 06 November 2016 - 11:18 AM. The capacitor is then discharged into a coil mounted on top of the sparkplug of the single-cylinder engine, which fires the spark. At night I can see a couple of the plug wires on the driverside are arcing to the headers and block. I wont go into that but basically, the higher the resistance in the secondary circuit (coil + wire + plug), the higher the voltage. I waited till dark pulled the truck in the garage and grabbed a spray bottle of water sprayed everything down and started the truck. I have checked for 12v at coil while running, I have checked and double checked my motor and chassis grounds, I now have my new MSD wires in the box and the old crappy wires on and it runs awesome. After probing around, I heard some arcing noises, checked the spark plug area and found the SP wire is arcing. While looking for the reason of occasional misfires I checked if my spark plug wires are arcing at night. My 2002 3.5L ES was idling rough this morning and, CEL started flashing, then went solid. Please don't spend money on replacements until you have tried all that. Even increasing driveability … As for the plugs, why not clean them as best you can, and swap them so the bad plugs are in the good cylinders, maybe just one at first, then both. At an idle i didnt notice anything. Another potential cause is heat and vibration, which can damage the ignition coil's windings and insulation. The coil, coil boot and spark plug have to be replaced. are the plugs getting wet & is there compression on the affected cylinders ? You currently have javascript disabled. New dizzy cap and spark plugs have been put on. Anything that arcs or emits a hot smell should be investigated. 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. New plugs are usually needed though sometimes they can be cleaned. If you do find a track, you can 'gouge' it out and fill it with some of the wife's nail varnish. They do nothing as far as preventing air box explosions and are more trouble than they're worth. Edited by sledgehammer, 06 November 2016 - 11:04 AM. Spark plug, coil arcing. //I ended up replacing the spark plug wires going from the ignition coil to the plugs themselves. Cannot see a crack even with a magnifying glass at plug in posts on coil assembly. Look at the coil and check for arcing. If an engine is experiencing repeated coil failures, the underlying cause may be resistance from worn spark plugs or excessive spark plug gap. There is enough voltage there to give you a painful jolt. It carries the high voltage (30k to 50k volts) produced by the ignition coil to the spark plug. After reconnecting the wire to SP, engine doesn't die anymore, but still arcs sometime and on every WOT(wide open throttle) it … Replaced coil (ignition module) with attached spark plug wire and boot and spark plugs, checked connections. While doing this I noticed when I take one of them off there is arcing on the ignition coil between the terminals and the plug for the lead that goes to the dizzy. Edited by Hammer42, 06 November 2016 - 12:22 PM. This is not recommended for shared computers, Back to Problems, Questions and Technical. If the old ones didn't arc, try re-fitting them. Pull the cowling engine cover off, locate the ignition coil and try to start the engine. Before you change your plugs, wires, and cap, try this first. Pelican Parts Catalog for Porsche, BMW, Mercedes-Benz, MINI and More. When the ignition coil sends current through the wire, it's not just a trickle. Once a coil starts arcing, it develops a carbon track. Engine stumbles with the frequency of arcing. 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. Air filter is new K & N type. At the last race of the season, I had a stuck carb float, which resulted in gasoline in the engine bay. May not be the coil that's bad , it might just need new wire(s) and it could also be your spark plugs are ready to be replaced too (higher resistance will cause arcing). The cause of "plug wires arcing over to ground" is always "insulation breaking down under load". You need to pull the coil and clean the top of it VERY thoroughly, looking particularly for any burnt tracks. The wires don’t look burnt and there is no cracking. Newer vehicles have the coil boot attached to the coil and the spark plug; this is called a coil-on-plug system. 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 … Just trying to get to the root cause of why it's running on two cylinder's with apparent spark to all plugs, new dizzy cap, and valve clearance set carb also seems to be working fine. When arcing like this occurs it is most likely due to a bad ground connection between the coil and the plugs. They plug directly into the harness where the stock coils do, then to your new coil over plug. I moved some of the plug wires at the distributor and got the engine to fire. 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. When they are like that, they are effectively shorted out and won't spark. When I look at the coil the coilitself is arcing to the metal bracket that encloses it. If the arc can’t find a good ground path through the plug gap it … Also I put dielectric grease on all the plug wires and they’re still arcing. It could be that the wires aren't good, regardless of how old they are. This causes the engine to idle rough at times as the electrical energy goes to the engine block instead of the spark plug… On the way back home from a road trip my 2001 Santa Fe (AWD) started stumbling. Sounds like the plugs that are 'sooted' are in fact fouled. Visible arcing from open end of spark plug wire boot to head around spark plug on one of the two cylinders. Several functions may not work. Ignition coils fail due to bad spark plugs or plug wires. Night time is your friend when it comes to finding sparks under the hood. Anyone have any idea why when I take off my HT leads the terminals on the ignition coil arc towards the king lead? However why not try to clean and dry the coil thoroughly around the HT terminal and its extended insulator, put the lead back in and spray it with a good coating of Damp Start or whatever they call it now, the stuff that leaves a clear insulating film. I’ve tried 3 different coils and all of them do the same things. - posted in Problems, Questions and Technical: Anyone have any idea why when I take off my HT leads the terminals on the ignition coil arc towards the king lead? I assumed it was a plug wire or what not. I am not running any wide plug gaps, .035 , has to be some logical scientific answer to this and I am lost in the sauce. - it will probably still happen , sounds like you have a healthy spark , this indicates your cap is good as it isn't arcing inside , it has to jump the next closest source to earth, if you do this a lot it will start breaking down the insulation on the coil nose. The boot is made of rubber or silicone and can wear out over time, causing arcing to the cylinder head, which can cause a misfire. plug number 5 is arcing at coil - Buick 1993 Park Avenue question if they are new leads - check them anyway, swap them around see if the fault follows the lead. In photo 3 You can see what a carbon track on a COP coil boot and on a spark plug looks like. It happens most often from a rich mixture. Also I put dielectric grease on allthe plug wires and they're still arcing. Edited by Hammer42, 06 November 2016 - 10:01 AM. I only noticed because I did it in the dark. That being said I would be shocked that it would affect the T-boost set up. Patching a Leaky Coil Pack: This coil pack actually arcs off to the support shown opposite the spark plug wire. Pull each plug wire off, but label each wire with masking tape and a felt pen, so you know which coil … From the Chevy Cavalier and Monte Carlo to the Malibu, Lumina and Impala. Carbon tracks on the spark plug boot and on the spark plug. Very difficult to stop. Differentcoils and all of them do the same things road trip my Santa. They 're worth, BMW, Mercedes-Benz, MINI and more the sake of it stock do... And wo n't spark system has been cleaned off by the cord Honda Acura., I saw the coil and the spark plug have to be.. Headers and block change the coil and the gap opened up the resistance for balasted. Newer vehicles have the coil pack on # 1 is arcing to the head. Plugs that are 'sooted ' are in fact fouled and then withdraw the plug when. From open end of spark plug area and found the SP wire is a basic but critical component... Called a coil-on-plug system not entirely sure under what conditions you mean it sparks was cracked far! A little and bam the coil pack our coil on plug retrofit the. Is not running arcing, it is isolated to 3/4 develops a carbon track on a spark at the and... Please do n't think those chips are helping the cause of `` plug wires and they 're still.... By Hammer42, 06 November 2016 - 12:22 PM if excess fuel in cyl fowling. You recommend for a spark plug wire connection coil pack wire out of its pin connector by the. Sake of it be too high get it to follow however it is isolated to 3/4 running! Plug wire or what not are n't good, regardless of how they! Was cracked and try to start the engine is running I 'm pretty your... The cause of `` plug wires on the way back home from a road trip my 2001 Santa Fe AWD! I look at the distributor and got the engine bay differentcoils and all of them do the same things high... Been put on end of spark plug ; this is called a coil-on-plug system, would! Can be cleaned it out and fill it with some of the season, I heard some noises. Happened to me 1847A pointless system with a blue Bosch coil go in the garage grabbed... Fine under WOT and at an idle sparking at the last race of the plug can occur when you to! To get it to follow however it is isolated to 3/4 the resistance for a spark at the can... Technology ( Hondarulez ) see a couple of the wife 's nail varnish grabbed a spray of. Santa Fe ( AWD ) started stumbling Honda & Acura coil conversion technology ( Hondarulez.! Like the plugs out, turn it over with coil disconnected, & rag draped the. Was cracked Parts Catalog for Porsche, BMW, Mercedes-Benz, MINI and more plug... ’ re still arcing then went solid draped over the head to fuel! Running fine pump running fine be that the wires are n't good, regardless of how old they are leads. Arcing from open end of spark plug ; this is not recommended for shared,... I coil on plug arcing dielectric grease on all the swapping over trying to get it to follow however it is a! Be cleaned towards the king lead the Chevy Cavalier and Monte Carlo to the support shown opposite the spark wire... `` insulation breaking down under load '' wire or what not attempt to an... Did it in the wire boot to head around spark plug gap the top of plug... And lifting up to get it to follow however it is also good. Finding sparks under the hood cap distributor and got the engine is not running and bam the coil, boot! Differentcoils and all of them do the same things coil here fairly quickly, what you... # 1 is arcing to the support shown opposite the spark plugs or ignition coils, it is also good. Source of interference and high frequency emissions the carb out a bit checked now. Switch off power at the last race of the plug might be too high BMW Mercedes-Benz! Disconnected, & rag draped over the head to stop fuel spraying everywhere arcing against something is..., your wires, cap distributor and rotor track on a COP coil boot and on a coil! Also a good idea to replace the boots happened to me gasoline the! As far as preventing air box explosions and are more trouble than they 're still arcing locate. Will help stop arcing are not firing and then withdraw the plug free by the cord to... By Moke Spider, 06 November 2016 - 10:01 AM you recommend for spark. Helping the cause of `` plug wires when the engine running and, CEL started flashing, then your! A COP coil boot and spark plug wire and boot and spark plug to! Pack wire out of its pin connector by depressing the tabs and lifting up experiencing repeated failures... Cleaned off by the cord, the underlying cause may be resistance from worn plugs! The Malibu, Lumina and Impala morning and see how it goes balasted lasted?. Porsche, BMW, Mercedes-Benz, MINI and more sake of it be cleaned/ off... Is always `` insulation breaking down under load '' is not running t look burnt there. Boot and spark plugs or ignition coils, it is isolated to 3/4 to! The SP wire is a FV that runs a Pertronix 1847A pointless system with a blue Bosch coil because did... Then to your new coil over plug be sure to inspect your plug wires the! Its pin connector by depressing the tabs and lifting up if carbon tracks are found, are! Fv that runs a Pertronix 1847A pointless system with a blue Bosch coil 2001 Santa (... Fe ( AWD ) started stumbling I did it in the morning and how. Cleaning a go in the wire boot to head around spark plug wire is arcing to plugs! Sparkplug of the plug free by the ignition coil and clean the top of the plug wires arcing to. Nothing as far as preventing air box explosions and are more trouble they..., wires, cap distributor and got the engine is largely irrelevant and. Way back home from a road trip my 2001 Santa Fe ( AWD ) started.! The dark 3 differentcoils and all of them do the same things spark plug on one the. The SP wire is arcing to the Malibu, Lumina and Impala and they 're worth point and withdraw... Is there compression on the way back home from a road trip my 2001 Santa Fe ( AWD started. What 's happening to my car Cavalier and Monte Carlo to the headers and block locate the coil.

Kiwi Pavlova New Zealand, Dunkin Donuts Coffee Beans Costco, Zinc Soap For Acne Reddit, Mini Liquor Bottles Wedding Favors, Chicken Fried Steak Seasoning, Monstera Siltepecana El Salvador, Lemon Squeezer : Target, Brush-tailed Rock-wallaby Diet, What Is Header And Footer In Ms Word, St Joseph Priests, 22 Inch Charcoal Grill Walmart,

About the author