No Spark From Coil Pack

I know that its a no spark issue as I pull the plug wires off this coil and it does nothing to how the engine is running. Now have it in a shop and they found that there is no spark at the points. The front three cylinders are easy enough to access when you are checking your spark plug wires. On a hunch, put a plug in the other end and held plug to ground. Remove each coil from plug. Luckily, removing the coil packs is as easy as unscrewing a few bolts. I have a spark tester inline which shows no spark. Voltage can even be stepped up before sending it to the coil, so the coil can create a much hotter spark, on the order of 50,000 volts instead of 20,000 volts that is common with the mechanical systems. In earlier distributorless systems each coil produces spark for more than one cylinder. Back in the day, cars had distributors, points, and special high-tension spark plug wires. Take the spark tester and put it in line with the coil in the same way you did with the spark plug wire. With "coil on plug" ignition where one coil is sitting on top of each spark plug, only a failed coil needs to be replaced, and when diagnosing an ignition coil failure, it's possible to swap the. The plug wire runs from the ignition coil to the plug cap. Drove for a while, no issues. Step 4 - Replace the coil pack. Important Cookie Information This website uses cookies for reasons of functionality, comfort, and statistics. This part is responsible for creating the voltage necessary for spark plugs to work. 6 OEM BOSCH Ignition Coils 0221504470 +6 Spark Plugs kit 12122158253 For BMW. If you're using a full dizzi, am fairly sure you just run the trigger wheel as-is - but if you're fuel only then a tacho-signal from ECU would be. The front three cylinders are easy enough to access when you are checking your spark plug wires. Coil on Plug Conversion; If this is your first visit, be sure to check out the FAQ by clicking the link above. Also look to make sure that there are not any other wires connected to Terminal #1. Fortunately, a faulty coil pack can be quickly diagnosed and easily replaced. The ignition coil turns the 12 volts from the battery into the high voltage needed to fire the spark plugs. A new coil pack. Stihl TS400 Ignition Coil No. I changed the plug with no spark on the first. NO PICTURE AVAILABLE: FITS MODELS TNT100, AH520, AH600, AV520, ECV100, SPARK PLUG BOOT TECUMSEH 610118 *Fits most newer external coil point ignition 3 and 3. Find DODGE RAM 1500 Ignition Coils with Coil pack Coil Style and get Free Shipping on Orders Over $99 at Summit Racing! NGK Spark Plugs U5053/48651 - NGK Ignition. This is why if you raise the compression ratio and the amount of fuel being delivered of an automobile engine it can get to the point where the stock coil can't fire the spark plugs because the spark is being quenched. The longevity you get from your coil may depend on usage, demand on the coil or environmental conditions. I disconnected the kill switch wire coming from the coil, and still no spark, so that led me to believe that my coil is bad. No Spark to Ignition Coil 3. If an engine has a coil-on-plug ignition system with no plug wires, remove one of the coils from the spark plug and insert an old spark plug, a spark plug tester or a screwdriver into the end of the coil. The second would be to replace the actual coil module. Flywheel magnet is not loose, has strong magnetism. A bad coil pack can be diagnosed with a visual inspection of the spark plugs, which show charred or blackened deposits on the spark contact points. They were often considered a weak point in the ignition system. It can be either a broken coil (cheaper) or a broken distributor (expensive). 6 OEM BOSCH Ignition Coils 0221504470 +6 Spark Plugs kit 12122158253 For BMW. The car had been running great until i parked the car to rebuild the turbo. Use a spark plug tester to check for spark when you turn the key. I no longer have my car or the manual, but I remember that there is no voltage to either terminal of the coil pack (only the center one). It is best to replace the entire coil pack as opposed to just one coil in order to avoid malfunctions in the future. The other tool that showed spark is actually misleading because while you have some, it isn't necessarily enough to fire the plug in the cylinder. It is a coil pack engine with 3 coils and a wasted spark design, meaning each coil fires 2 cylinders at a time. Assuming a spark is now being generated, place the cover back over the engine. Re: After swapping coil,pulser coils,spark plugs,and connections no fire on left cyli Originally Posted by Rob50056 I checked both wires going to both coils with key off and on. Or, just as often, no spark at all. im gunna check the ignition relay today because in another forum i seen they had a simular problem. Press down on the clips that hold the coil packs in. The old coil witch was really only 1,300 miles old had a scroched wire so I thought that was the problem. still doesn't want to spark. The ignition system is the starting system for your small engine. Sigelei, the leading manufacturer of vape device, specialized in electronic cigarette research, production, development, sales and service. I need help I have recently replaced the crankshaft sensor and the ignition coil on my 1998 Jeep Cherokee. the wires but if that is different they should be an easy switch from one coil pack to. The source coil produces the power. These numbers are correct for a 1-2-3-4-5-6 or 1-6-5-4-3-2 firing order (many V6s; this coil was originally designed as an upgrade for Buick. This is why the ideal way would be to test them under 12 bar pressure. Luckily changing the spark plugs on these 3. it's a ignition coil. The coil pack is held in place with several bolts, remove them. To check the ignition coil's primary resistance, with the ignition off, disconnect the three-terminal connector from the coil. If you don't have spark from the coil then I would replace this part first and see if it starts. Need to know if anyone knows how to test the charge coil output and or the power pack output with out the s-80 or m-80 neon test light because I don't have one. How to Diagnose a Loss of Spark in Your Car Engine. After about 30 miles of driving, the engine would die. Around the same time, that electronic ignition was splashing into the automotive scene, the world began to see ignition coil packs, coil-on-plug ignition, and the waste spark ignition system. checked for spark and number 1 has zero spark. Clutch vs coil pack symptoms? mjharper Sep 4, 2019. Re: No Spark from Coil on 1986 Mercury 3. If you have no spark from two of the four towers of your coil pack, you need to check the wiring between the coil pack and the ignition module. No spark from the coil pack - Answered by a verified Toyota Mechanic We use cookies to give you the best possible experience on our website. Flywheel key is OK. 1 out of 5 stars 1 product rating 1 product ratings - For BMW Ignition Coil 6 Pack Updated W/ Connector Boot Genuine Bosch 0221504470. The older TS400 saws had a 3 bolt style, which we also carry as part#14401. REPLACE IGNITION COIL. If an engine has a coil-on-plug ignition system with no plug wires, remove one of the coils from the spark plug and insert an old spark plug, a spark plug tester or a screwdriver into the end of the coil. NO PICTURE AVAILABLE: FITS MODELS TNT100, AH520, AH600, AV520, ECV100, SPARK PLUG BOOT TECUMSEH 610118 *Fits most newer external coil point ignition 3 and 3. I no longer have my car or the manual, but I remember that there is no voltage to either terminal of the coil pack (only the center one). Ignition Coil Tester Tools. With "coil on plug" ignition where one coil is sitting on top of each spark plug, only a failed coil needs to be replaced, and when diagnosing an ignition coil failure, it's possible to swap the. These are more examples of open-cir-cuit conditions, which usually indicate disconnected or open plug cables. com specializes in hard to find NGK products. Outboard ignition coils, sometimes called coil packs, supply the high voltage required to fire spark plugs. No spark, so I started troubleshooting no spark. Removed air cleaner two carb bolts pulled carb off install new gasket two bolts air cleaner hooked up choke and throttle. This may seem like a no brainer because the most obvious symptom of a BAD ignition coil is a no start no spark condition, but here are a few other symptoms you'll see along with no spark: None of the spark plugs will fire spark. yes coil pack,sparkplug and compression are fine, no spark,no electrical impulse to connector for coil packs,both leads,well all four leads light test probe with just key on. 7T, there are six coil packs that sit on top of each spark plug, three on either side of the engine in a right and left bank. glad you got your problem fixed and are up and running again. What are the causes of no spark from the ignition coil on a 1977 3/4 ton heavyduty 4wheel drive pickup with a 300 6 cyl. The spark then travels down the spark-plug wire to the correct spark plug in the proper cylinder. Did a crank & cam System Log, and I don't see any loss in signal. SOLVED - No Spark, Coil Gets Power, Porsche 944. I then figured the ignitor may have went bad and went to the local NAPA store and had them cross the ignitor $75. if you want to run waste-spark coil packs you remove two opposing teeth from the 24-tooth wheel to make it a 12-1 trigger wheel (runs at 1/2 crank speed hence the duplication of the 'missing' tooth). checked the wires all is good. CHEV SPARK 0. Right now I. • A pickup coil contains a coil of wire, and the resistance of this coil. You must remove the spark coil retaining screw to access the removal of the soark coil. 0L engines) and all I get is a spark to one of the coils and some light back firing. The cartridge coil-pack is fitted directly over all the spark plugs and lifts off in one unit. If there is still no spark, the coil is likely bad. When low spark is detected on a plug, it might be time to replace a coil. So, I replaced the ignition coil to my 1993 volvo 850 because I wasn't getting any spark coming out of the coil. 2 le po335-no;. This part is essentially an induction coil and, simply put, a high voltage transformer. If you have trouble starting your vehicle in the cold, this is a good sign of potential ignition coil failure. I then figured the ignitor may have went bad and went to the local NAPA store and had them cross the ignitor $75. Regardless of the kind of ignition coil pack you are looking for, be sure to go for it without the price acting as a. This will go a long way in figuring out the problem. i don't know to much about it. The reason no parts store could find one is that our trucks don't use coil packs. By Tom Benford. When you accelerate the car, it has no power. set the gap to where the old one was located and hopefully it will fire off with no problem. Power Pack (Ignition Module) for Johnson Evinrude Outboard. This type of system typically uses high tension spark plug leads, which are much longer, to transfer high-intensity spark from the coil pack towers to each spark plug at the appropriate time. To check the ignition coil's primary resistance, with the ignition off, disconnect the three-terminal connector from the coil. No spark indicates an ignition problem. The Check Engine light will flash repeatedly or stay on solid on the dash. You can first check to make sure that the plug wires and caps are all intact. Polaris jet-ski has no spark, weak spark or intermittent spark refers to when an electrical discharge occurs at irregular intervals or lacks the ability to ignite the explosive mixture in the watercraft’s internal combustion engine, and subsequently, the motor fails to start up. My engine died while accelerating from a stop light the other day. Voltage and currents from your vehicle's battery need to be converted so that they're able to work properly with your truck's spark plugs. 8 awd Codes are P0300 and P0306 My husband changed spark plug 6 and the coil pack today. Since there are no moving parts, coil packs more reliably deliver spark to each cylinder for cleaner combustion. The other two wires come from the ignitor. Ignition Coil Tester Tools. my 01 dodge caravan 3. The car fired right up, but again, would die after about a half hour of driving. How do i test the coil and/or kill switch on the arctic cat snowmobile? I have no spark and I am told to check the coil and or kill switch. I can hear the fuel pump start when key is turned to run. ) Spark Plug wires E. I found that I had a no spark situation. 0V and it gets nothing i was told to replace the two sensors so i did. The 2007 Ford Edge has 7 problems reported for burned up coil packs. Could it be the electronic ignition control? What is the best way to test if. This DIY repair guide explains how to replace the ignition coil on a riding lawn mower. 030" gap is no good. This type of system typically uses high tension spark plug leads, which are much longer, to transfer high-intensity spark from the coil pack towers to each spark plug at the appropriate time. Original Equipment Fine Wire Platinum Spark Plug, Pack Bosch Uses A Platinum Center Electrode That's Heat Fused Into The Extended Ceramic Insulator. Or, just as often, no spark at all. Remove the old ignition coil (armature) mounting screws. the coil you have has the igniter built into it. V-Max cut out won't start, no spark Sign in to follow this. I took out the distributor (or is it called a coil pack on a '99??? I don't know the difference) and it's really dirty. But there was a down side to this characteristic: when you were trying to start the damn thing (with a kick starter, no electric starters in those days) the magneto put out its weakest spark. 12V is getting to the positive terminal of the coil and they tried swapping out the coil, but still no spark at the points. and coil pack and all seem to be. Drove for a while, no issues. If the spark is orange or some similar color. But that would cost more than a new spark plug. No spark to the plugs. ) Distributor cap C. An open or higher than normal resistance in a coil's secondary windings will also cause a weak spark or no spark, and may also damage the PCM driver circuit due to feedback induction through the primary circuit. The ignition coil produces the energy that creates the spark at the spark plug. LexusPartsNow. Why the Old Ignition Module Failed. to check the coil, unplug the white wire from the coil (this wire kills your spark via ignition swith or safety switch ) ,crank the engine, if you dont have spark, the coil is bad ,if spark is good , problem is in safety switch or ign switch , or wiring. Although the module fails more often than the coil I have seen both parts go at the same time. has bad miss in #4 cyl. Also, due to the number of different coil variations available, it makes it difficult for specific specifications. Wrapped around it is the secondary coil. The spark then travels down the spark-plug wire to the correct spark plug in the proper cylinder. The ignition coil, a vital component of any vehicle's ignition system, is responsible for providing electricity to the spark plugs. Today I noticed a rough running engine and loss of power. • The pickup coil, located under the distributor cap on many electronic ignition engines, can cause a no-spark condition if defective. I took out the distributor (or is it called a coil pack on a '99??? I don't know the difference) and it's really dirty. This also allowed ignition coils controlled by a vehicle's computer to be remotely mounted. ground the plug and crank this will eliminate the coil to ditributor plug wire as a cause and will reverify that the coil is ok. The 2 outter plugs have plenty of spark. Secondary Coil: Check for 7 ~ 9 ohms of resistance. 3L has a misfire on cylinder 2, i changed all plugs and plug wires, tested all and 2 is no spark. A new coil pack. A bad coil pack can be diagnosed with a visual inspection of the spark plugs, which show charred or blackened deposits on the spark contact points. 4 / Chevrolet UTE 1. Ground the spark plug or plug tester to the engine, then crank the engine and look for a spark. Spark plug wires are the components in spark ignition systems that transfer high voltage pulses between the voltage source, the distributor, and the spark plugs. The PCM will still activate the fuel injectors. Your Dodge ignition coil pack is connected to a four pin wiring harness. Testing the Prufrex Coil. But if you really want to fix your misfire, gather a bit more information first. M42 Coil On Plug Kits We built our first Coil On Plug kit to solve a problem that many turbo projects have. 0DOHC engine. No Spark to Ignition Coil 3. i just change my crank sensor today still nothin change. i am curious about the idea that, when using two coil packs to drive twin spark plugs, that you must alternate the plug leads as oliver described. Replace that and it should solve the problem. The 2009 Chevrolet Traverse has 5 problems reported for spark plug coil failure. by 94NOTOPZ. 1995 Jeep Cherokee Sport, will not start / no spark and distributer cap rotor button coil pack finally after all that took it to a local mechanic he said it was an oxygen crank 200 dollars and. If the spark is orange or some similar color. Testing for ignition input voltage and input signal. Every coil pack that goes out as a rental has been recently rebuilt and in-car tested to ensure 100% functionality. It stopped running when it wanted to shift, but that had nothing to do with it when I pulled a spark plug wire and no spark. I am in the process of troubleshooting a P0300. Same thing with the coil pack that the mechanic sold us. Put spark plug in the end of the coil plug wire that normally attaches to distributor. There was no spark when I checked it. After about 30 miles of driving, the engine would die. Repair your Mantis Tiller for less. 7T, there are six coil packs that sit on top of each spark plug, three on either side of the engine in a right and left bank. The coil pack is held in place with several bolts, remove them. The plug wire runs from the ignition coil to the plug cap. driving it will lose spark on the middle coil 2-5. The spark plug in the engine requires a high voltage for creating a spark and starting the combustion process. Can't figure this one out, and I am at my limit of knowledge and powers of google. i am curious about the idea that, when using two coil packs to drive twin spark plugs, that you must alternate the plug leads as oliver described. The coil pack is new, and im getting power into the coil pack but nothing out of it. Take the spark tester and put it in line with the coil in the same way you did with the spark plug wire. An ignition coil is an induction coil in an automobile's ignition system that transforms 12 volts to the thousands of volts needed to create an electric spark at the spark plugs. 4 1st gen the first coil pack again, and its got no spark. Want Answer 1. It has not been running at all this season, however it did run when it was put into storage. Every time. If it's not a lead wire or switch, replace the coil. No spark, so I started troubleshooting no spark. I have a I have a very rough idle that I narrowed down to a coil pack that won't fire in the #1 position (disconnected the connector on the coil while the engine was running and there was no change at the #1 position. yes coil pack,sparkplug and compression are fine, no spark,no electrical impulse to connector for coil packs,both leads,well all four leads light test probe with just key on. Automotive. On line help was great saw ran great. • The pickup coil must generate an AC voltage pulse to the ignition module so that the module can pulse the ignition coil. I have a deere 318 with an onan engine after it runs for like 5 minutes it will just die like you turned it off by the key due to no spark. I need Coil Packs (COPs) and I'm replacing all of them. I have an 84 Sierra with a small block 400 in it with HEI. Just to be sure, we put the Duralast coil pack from Autozone in slot #3 (plugs 3,6) on to slot #3, which was where the confirmed working pack had been -- and we got nothing. driving it will lose spark on the middle coil 2-5. The coil is a simple device -- essentially a high-voltage transformer made up of two coils of wire. No return of miss or check engine light yet. The coil pack does the job of producing that required high voltage. I then decided to check the coil pack by using a timing light hooked up to each wire. Please try again later. For vehicles that use a single ignition coil as the source of spark for all of the cylinders, a faulty coil will affect the operation of the entire engine. This reading read 12 volts on my digital voltmeter. I noticed there was a dent in the coil, and an oily residue below it, so I picked up a handful of snow, and used it to cool the coil down. Date published: 2017-09-27 Rated 5 out of 5 by ray from Up graded coil for Briggs engine. Ok so just by removing that one switch and fixing the connection on that wire I went from 5V at the + terminal on the coil to 5. Common in Bosch and Seimens ECUs, almost unheard of in ECUs of Japanese origin. 1999 blazer s10 4. No spark is one of the most common reasons why your engine will not start. The other two wires come from the ignitor. So, I replaced the ignition coil to my 1993 volvo 850 because I wasn't getting any spark coming out of the coil. checked the wires all is good. This also works for checking condensers, spark plugs, and spark plug wires. It is an electronically controlled pack of ignition coils regulated by the car's computer and is used to create the spark for each engine cylinder's spark plug. com offers the lowest price and fast delivery for genuine 1991 Lexus LS400 Ignition Coil & Spark Plug. How to Test an Ignition Coil. Took a spark plug cable and ran it from coil to ground, with a small gap at the ground end. i have no spark from any of my spark plugs i changed the coil pack and plugs and wire put it on the exact way i took it off i dont no what to do dont no. That is the point where one of your spark plugs fire. The ground tested fine at each coil pack as well. Luckily, removing the coil packs is as easy as unscrewing a few bolts. BMW E90 models utilize an individual ignition coil for each spark plug, referred to as coil over plug. This is why if you raise the compression ratio and the amount of fuel being delivered of an automobile engine it can get to the point where the stock coil can't fire the spark plugs because the spark is being quenched. I used a multimeter to check the battery voltage (12 volts) but the highest voltage going in to the coil is only 1. My vehicle has two main problems: exhaust fume and spark plugs full of coal. This reading read 12 volts on my digital voltmeter. The truck coil gives the most powerful spark and is easily identified by the heatsink. add to compare compare now. Coil on Plug Boots;. The other two wires come from the ignitor. What I found was that on cylinders 1 and 3, about every 6 to 8 revolutions, there would be a miss (no spark fire). On my (previously turbo, now N/A) L28, I very much wanted wasted spark, distributorless ignition, but disliked everything necessary to use the Ford EDIS system (bulky 36-1 wheel with an awkward VR sensor, sensitive PIP/SAW wires, very limited choice of coil packs, no dwell control, no spark cut for rev limiting, the list goes on). A separate wire fro starting from the key to the coil thence to the points and ground. ground the plug and crank this will eliminate the coil to ditributor plug wire as a cause and will reverify that the coil is ok. 8 awd Codes are P0300 and P0306 My husband changed spark plug 6 and the coil pack today. The ground tested fine at each coil pack as well. Push the harness in at first to help release the clips. The old coil would lose spark when hot and not restart until it cooled off for a couple hours. The mower was working just fine as I drove it around the yard, the lights were left on so I charged the battery and ever since then it will not spark/start. If removing the Green wire still did not turn the tester ON , the coil may be open. Power Transistor Unit Removal, Inspection, and Installation on the DOHC 6G72 engine in the Mitsubishi 3000GT and Dodge Stealth by Jeff Lucius Introduction The ignition system's purpose is to deliver sufficient energy to the spark plug at the correct time during the compression stroke. The car crank but it wont turn over. If the coil manages to spark both plugs it's definitively good. Although the module fails more often than the coil I have seen both parts go at the same time. To contact Bosch USA, click here. easiest and simplest way to check the coil is to stick your finger in the plug cap and kick it over, LOL if you get a shock, then its good, if you dont, then something is wrongits not a HUGE shock so dont worry about getting hurtIt may also be something else other then the coil, check all the ground wires, and where the wires connect, also your stator could be bad. Testing your Caravan coil pack for Power. In a vehicle, an ignition coil converts the 12 Volts of power from the battery to the thousands of volts that are needed to fire the spark plugs. Ignition Coil 8 Pack For Ford Multispark Blaster Epoxy 4. We are not NGK Spark Plugs USA. Since there are no moving parts, coil packs more reliably deliver spark to each cylinder for cleaner combustion. Removed boots and swapped onto new coil pack (minus the new boot) Removed (3) Torx screws, lifted ignition module off old pack, swapped to new. No spark from the coil pack - Answered by a verified Toyota Mechanic We use cookies to give you the best possible experience on our website. I noticed there was a dent in the coil, and an oily residue below it, so I picked up a handful of snow, and used it to cool the coil down. Clutch vs coil pack symptoms? mjharper Sep 4, 2019. I no longer have my car or the manual, but I remember that there is no voltage to either terminal of the coil pack (only the center one). Basic timing synchronisation so that the spark on cylinder #1 occurs when the piston on cylinder #1 is at around 15 deg BTDC. On a hunch, put a plug in the other end and held plug to ground. but one time i said i need spark plug wires and i got reamed out. Our factory offers the best quality ignition coil pack made in China with low price. The coil pack on this Saturn is an easy swap. In a vehicle, an ignition coil converts the 12 Volts of power from the battery to the thousands of volts that are needed to fire the spark plugs. The ignition coil produces the energy that creates the spark at the spark plug. No spark in any cylinder would most likely indicate a failed DIS module or crankshaft position (CKP) sensor. I have removed coil pack and want to know how to test if this it the problem or if its in the wiring harness or the pcm. The spark then travels down the spark-plug wire to the correct spark plug in the proper cylinder. The Green Spark Plug Company stock ignition coils by several manufacturers such as Lucas, Bosch, and Lumenition. Need to know if anyone knows how to test the charge coil output and or the power pack output with out the s-80 or m-80 neon test light because I don't have one. This is a repair service for a 1999, 2000, 2001, and 2002 Ford F150 5. There is no waste spark. I replaced the the distributor which includes cam sen. 8 Pack Ignition Coil Dg508 Motorcraft Spark Plug Sp479 For Ford Lincoln Mercury. pulled the plug out and theres no spark, tried a different plug and still nothing. This can give a dangerous advanced spark. The coils should snap into place. The later four-terminal coils have the ignitor built into the coil pack assembly; there's no separate ignitor. SOLVED - No Spark, Coil Gets Power, Porsche 944. Put spark plug in the end of the coil plug wire that normally attaches to distributor. still doesn't want to spark. New ignition wires. An ignition coil is a kind of high-voltage transformer. What is the primary voltage from the power pack? Outboards tend to use higher than 12V to allow the coil to be smaller in size, so a 12V coil would probably need a ballast resistor. LexusPartsNow. An interesting thing I noticed was the left side of the engine, fired on the positive side of the coil, were all worn on the platinum tips. just put a new engine in a 1997 jeep wrangler 2. I do a full tune-up, plugs,points. This type of system typically uses high tension spark plug leads, which are much longer, to transfer high-intensity spark from the coil pack towers to each spark plug at the appropriate time. Usually when you are lacking spark in one of the coil packs it's a problem with the ignition module under the coil packs. Applies to Hot Spark 3-Series (red) ignition kits. yes coil pack,sparkplug and compression are fine, no spark,no electrical impulse to connector for coil packs,both leads,well all four leads light test probe with just key on. No spark at all. The ignition coil is truly an amazing little device. If you don't have spark from the coil then I would replace this part first and see if it starts. The coil and module have been replaced twice with no difference and the pcm was replaced and no result either. At least they said it did. Coil packs have 12 volts during cranking. If you got a nice blue spark as you turn the engine over, no need to investigate farther. Online shopping for Coil Packs - Ignition Parts from a great selection at Automotive Store. Product Image. 10mm Spark Plug Wires for Toyota 2RZ 3RZ Tacoma & Hilux Engines 98-01 Coil Packs. 0 140 Help!!! I put an inline spark tester and now I have spark to the coil and out of the coil. Coils and Spark Plug Wires Trouble Shooting. 1996 Ford Contour, 2. 8 Pack Ignition Coil Dg508 Motorcraft Spark Plug Sp479 For Ford Lincoln Mercury. Ford Mustang V6 1994-2004: Symptoms of Coil Pack Failure. Either the coil is weak and is going bad or you do not have proper voltage going into the coil. If you have no spark from two of the four towers of your coil pack, you need to check the wiring between the coil pack and the ignition module. Ignition coil packs are available in a wide range of prices. With "coil on plug" ignition where one coil is sitting on top of each spark plug, only a failed coil needs to be replaced, and when diagnosing an ignition coil failure, it's possible to swap the. Well that didn't fix anything. Re-install the ignition coil, remembering to first re-connect the wire previously attached, then test the spark of the mower. This reading read 12 volts on my digital voltmeter. 4 1st gen the first coil pack again, and its got no spark. The coil bolts should be precisely tightened to 50 inch pounds. 4 / Chevrolet UTE 1.