If the system isn’t working correctly, the engine will misfire on one or more cylinders. Make sure the wire is away from any fuel supply or fumes as you’re going to be causing a spark to jump from the wire to ground. Both of these ignitions are easy to install on nearly any 4, 6 or 8-cylinder engine running a distributor. The plugs and wires look fine. One common question in regards to MSD Ignition controls is “Why isn’t 12V power on the orange (COIL +) wire?” The main reason 12V won’t be present at coil + is because your MSD ignition is a Capacitive Discharge Ignition. I’ve run into some problems trying to get the MSD 6a ignition to spark. tomposthuma. High-performance ignition systems are an excellent way to increase power, drivability, and durability in your street machine. This Tester, PN 8998, simulates a trigger signal on the mag pickup or white wire of the MSD and has a digital read out allowing you to ‘control’ the rpm. Reconnect the original ignition wiring. I have the same MSD set-up you have. Before getting into those steps, let’s review a few installation tips to confirm the system is installed properly and for best operation. Pelican Parts Catalog for Porsche, BMW, Mercedes-Benz, MINI and More. This can be prevented by drilling a couple vent holes in ... A poor ground connection can cause many frustrating problems. (Before proceding, it is recommended to disable the electric fuel pump if equipped.). This process should trigger the MSD sending a spark to the coil and out the coil wire. The Digital 6A and 6AL have a built in reverse polarity protection circuit. I used to think the same, but proof is in the multiple dyno graphs . Hi, I have a MSD 6A ignition in my -67 Camaro. Holley carburetors have powered every NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Sometimes, installation errors or mishaps can cause issues that prevent them from working properly. i am going to install MSD 8.5 wires on it and put on an accel high performance cap and rotor The electronics of the unit are coated in a conformal sealer, but the assembly is not waterproof and should be installed away from direct splashes of water or rain. 6A - PN 6201, 6AL - PN 6425 1 - Parts Bag. This is one is a little less popular, having a large external box to take up space in the engine bay, and being more expensive. With that said, I've used an MSD 6AL for a while, and it did help out the idle. Try a flat spark table at 15 degrees retard for all RPM. To lengthen the wires, use one size bigger gauge wire (10 gauge for Though MSD builds these ignitions to be as heavy-duty as possible, there are still times when it may be necessary to check out your ignition system to confirm everything is working as it should. The car was driving fine prior to MSD 6a ignition when 12volt ignition wired directly to the +coil and distributor wired to the positive+ and negative_ of the coil. This wire turns the MSD on and off with the ignition switch. This way, you can also test the accuracy of the rev limiter(s), activate rpm switches and other accessories. MSD supplies a white wire from the 6A box that triggers the box when using a points-triggered distributor. Depending on your application, either tap the white wire to ground on and off to trigger the ignition or short the violet and green wires on and off. I am in need of a new MSD ignition box and I have seen conflicting reports of problems with slow cranking no spark issues and voltage sensitivity with the new Digital 6A (6401) and the 6AL (6425). Pull the coil wire off the distributor and plug in a spark plug. It is best to route this harness away from the two coil wires and any spark plug wires. I have reason to believe that my MSD box is giving me a misfire at about 3000 - 4500 rpms. What can be done to fix it? Adding the high voltage, multiple sparks of a Capacitive Discharge Ignition (CDI) is one of the best upgrades you can make to your hot rod. Read More. WiRiNg. There are different models available that all have unique features and accessories. But...what if a drag racer were to use that rearward weight for their benefit? I installed an MSD 6AL2 programmable ignition and am having a terrible misfire after the engine has started. Results Using The New Version Digital MSD 6A & 6AL April 25, 2012, 10:41 AM. The problem is it takes a lot of turns of the motor now to start the car. If not, check the battery connections and the battery itself. Every Ignition Has Two Sides. The MSD Ignition features a capacitor which is quickly charged with 520 - 535 volts and stores it until ... MSD Digital 6A and 6AL Ignition Control. Some older vehicles had a bypass that occurred during cranking and when that happens the reduction in voltage during cranking will essentially turn the MSD box off. This type of problem will only get worse and may soon lead to even greater problems if the coolant leak isn’t fixed. © 2020 Holley The paired black and orange wires are the ONLY wires that will be connected to the coil terminals (black to negative, orange to positive). The company that is famous for their fuel system components cranked out horseless carriages and motor-driven cycles at the dawn of the age of the automobile.Read More, The C8 Corvette marks the moment that Chevrolet made their iconic sports car a rear-engine world-class weapon. With the key in the on position (not running), the LED should flash five times to indicate all systems are go. Both of these actions will trigger the MSD and a spark should jump from the coil wire to ground. Remember, the voltage from the MSD needs to go through the windings of the coil to build up a higher voltage so the coil could also be at fault. Running it along a fender well or the block creates a ground plain for the harness to reduce any electrical interference. It is very important to check for 12 volts on this wire when the key in on (in the run position) as well as during cranking. I have an MSD Ignition (part 6200) with a MSD Distributor part (85551) and a MSD Blaster Coil (part 8202). My money is on a rotor phasing problem; especially since you effectively locked the weights. I can use timing accessories along with an MSD 6A ignition. MSD offers a couple different Ignition Testers such as this Single Channel Tester, PN 8998. I don't have a 6AL, I have a 6A, and it runs perfect with my HEI and vacuum advance setup. The battery needs to be fully charged and in good health, then check the MSD connections to the battery positive terminal as well as the ground. A spark is going to jump from the wire to ground, so make sure there is no fuel sources or residue near-by. A multimeter is an essential tool to any automotive electrical diagnostic test. Also, be sure to route these wires separately from the from the other wires, especially the magnetic pickup harness to prevent electrical interference. Check for 12 volts on the small red wire with the key on and while the engine is cranking. Disconnect the connector from the distributor and just like with the white wire, remove the coil wire from the distributor cap and position it about half-inch from ground. The MSD 6A is the base model of the capacitive multiple spark discharge 6 Series design. Remember, these units have a one year warranty, plus most of the 6A series can be rebuilt so it’s worth sending the unit in after you’ve taken the proper steps and checks. There are several other simple installation tips for the rest of the wires. however i noticed that type of msd many time having problem or burned component inside, then i research the problems and find thats all problems of msd damaging process begins from 2 little condensators ( tantalum 2.2uf ). If you’re not using the negative terminal for ground (which is the preferred method), make sure your ground source is clean, tight and there’s a path from the engine to the chassis and to the battery. 350 MisFire / BackFire. An MSD must be connected directly to the positive battery terminal to ensure that its transformer and capacitor receive a direct 12 volt power supply. Any luck with this? It’s easy to use and very helpful when it comes to confirming the operation of the ignition system. Bad spark plug wires are another common cause of misfires. To lengthen the wires, use one size bigger gauge This is very important as on a lot of older vehicles there was a bypass that supplied higher voltage to the coil during cranking to assist in cold starts. Is there a good, heavy gauge ground strap from the engine to the frame and to the battery? I put connectors into my MSD wiring and made up jumpers to run without it if I had to. Post Sep 28, 2011 #1 2011-09-28T23:05. I had a msd 6a in my 82 and it was flawless. Without cranking the engine, turn the key to the on position then take the paperclip and short the violet wire to the green wire of the 2-pin connector over and over. As a result, Spark plugs, ignition cables, distributor cap and rotor, and ignition coil wear over time.Hence, their ability to transfer the needed spark to ignite the air/fuel mixture inside the combustion chambers becomes compromised. This can be prevented by drilling a couple vent holes in Once the unit is mounted, it’s time to focus on the wiring. In your application, the white wire is not used. Just thinking out loud, looking for possible causes of what I think may be misfire. Testing the box is simple. It has some (tentative) advantage of being a capacitive discharge system, so it can give hotter spark, longer spark,or multiple sparks. A lot of coils are replaced unnecessarily because problems like these are overlooked or misdiagnosed. Braided wires are correct. They do more than simply provide part of of centrifugal advance. You can get away with swapping most any standard coil just to confirm this test. Make sure to test the 12 volt on/off wire while cranking the engine! Also where the 2 wires from the msd go to the wiring harness need to be solid. It's the solid core that are warned against as causing problems. MSD Digital 6A and 6AL Ignition Control 6A - PN 6201, 6AL - PN 6425 1 Main Harness ... causing crossfire which can result in misfire. Every … Intermittent issues can generally be tracked down to a faulty ground or loose connection and if you have trouble starting your engine, there are easy steps to take to confirm the operation of your ignition. i know i should have soldered it and i think i have an fluctuating voltage going to the box. That said, if you’ve experienced an issue or no-start situation, there are several items you can easily troubleshoot to assist in determining if the ignition is at fault, or move on to another system on your vehicle. MSD ignition problems MSD ignition problems. Trademarks belong to their respective owners. Ignition Related. If there is still no spark and all the connections and voltages check okay, the issue points at the MSD box and you should send the unit to the MSD Customer Support team. First thing to check is the status of the LED on the housing of the MSD. It very well could be the same issue with the second box. Also it won't start while the key is in the farthest position. Easiest way to see if the box is to take it out of the circuit electrically. Hi guys, Hoping you can help..... I’ve just recently purchased the MSD 6a ignition system and wired it in as per specs in the manual. In fact, each ignition is run under load on a test stand for over two hours to ensure full operation. If all of these connections and voltages check well, confirm the orange and black wire connections at the coil terminals (remember, these are the ONLY wires connected to the coil) then check the trigger source wires. Holley has been the undisputed leader in fuel systems for over 100 years. ELECTRONIC IGNITION, MSD 6A - IG-206. Remove the coil wire from the distributor cap and place it about ½” from ground. So lets say that I have a rotor phasing issue. This will protect the ignition in the event of wrong connections. I have a Proform HEI distributor that i converted to use MSD by removing the 4 pin module and using the 2 magnetic pick up wires. If it test out ok then it would be a good idea to run the grounds to the frame instead of the body. Your troubleshooting should always start with the battery terminal connections while confirming the condition of the battery. Facts that may or may not be relevant : I run an MSD 6A ignition, 6 mos old NGK plug wires, NGK plugs, stock heat range, overgapped to .045-.050, and an MSD blaster 2 coil, which is about 3 years old and kinda beat up looking (this is one suspect).Last I checked, compression was good and even at 120-125 psi … Next, have someone crank the engine over while checking for voltage as well. The ignition system is responsible for igniting fuel in the engine's combustion chamber. Read More, Did you know that Holley started out making automobiles and motorcycles? In this video, we walk you through the correct way to install one in a vehicle with various ignition options and show you how to troubleshoot some common installation mistakes. After checking the connection and terminal condition, use a volt meter to check for 12 volts with the key in the on position. MSD summed up for us on their educational site what is exactly happening within the ignition process: A typical (meaning stock) 12-volt automotive ignition system operates by taking in a low voltage with high current from the car’s battery and changing it into a higher voltage with lower current to jump the spark plug gap to propagate combustion in the cylinder. Thankfully, there’s a simple way to trick the ignition into sending a spark to the coil which confirms that it is wired correctly and working properly. After checking all of the voltages and connections as listed above, it’s time to physically check the output of the MSD. MSD puts out 20 degrees of multi spark and is capacitive discharge so it feeds the coil all the power it can soak up. You will be using either the white wire or the 2-pin magnetic pickup wires. Many applications experience a voltage drop during cranking which will cause a no start situation. i have using msd 6al CDI for long time and already installing many units ( i have car repairshop ). Problems with the ignition system can definitely cause misfiring, and they can do so in a number of ways. Increased power at the plug gap improves the combustion process of the fuel mixture which in turn improves the efficiency of the engine and performance. Quote. (Make sure the car is in park and all wires are clear of the fan and any moving parts.). Never had to use them. Advertisement. Took the truck on a small little road trip to get some firewood … The MSD Pro 600 was designed to have seamless integration with Holley EFI systems! Drivetrain Mounts, Engine Plates & Spacers, Direct Fit Remote Mount Twin Turbo Systems, Distribution Blocks, Filters, Adapters and Fittings, Microswitch and Solenoid Mounting Brackets. It’s a very useful tool if you have rpm activated switches or to check timing curves and functions. Since the factory wiring is no longer connected to the coil, an interruption in the voltage could cause the engine to try to fire, then fail and try to catch again. I went out for a test drive and I couldn't tell any difference (not expecting much noticeable performance difference anyway). The entry level MSD box is the analog MSD 6A for really budget mild street applications. The rotor is the NAPA non resistor rotor and brand new cap. Generally, it will be connected to the wire that used to go to the coil’s positive terminal. When it is varying like this I can hear the motor sound good and bad as it fluctuates. I have heard that people have had trouble with MSD ignitions burning up ignition related parts such as the rotor. The tester simply connects to a 12 volt source and ground plus is supplied with a clip-on test plug that puts a small load on the coil that connects to ground. An ignition system problem is one of the most common reasons for an engine to misfire. Are you sure the wires to the MSD trigger from your distributor or crank trigger are not backwards? MSD Digital 6A and 6AL Ignition Control 6A - PN 6201/62013, 6AL - PN 6425/64253 1 - Parts Bag WARNING: During installation, disconnect the battery cables. i also had to get a msd #8910 eis for my check engine light to not come on. MSD works, but I have seen some people with problems. Just for fun switch the wires on the mag pickup. Troubleshooting your MSD Ignition can easily be accomplished as explained earlier, but if you’re looking for a better way to confirm the operation of the coil, ignition and much more, MSD offers an easy to use hand held Ignition Tester. You need to confirm 12 volts during cranking. A spark should jump when you remove the short. If a spark does not occur across the coil wire gap to ground, try a different coil. I put my MSD 6A ignition box and the MSD coil on the other day. The only two wires connected to the coil are the Orange and Black wire from the MSD. I would check the ohms at your mag pick-up. MSD 6A. Yo! the wires inside my distributor were blue to the pick-up and black to the coil. When a wire is specified These wires are carrying over 480 volts so be cautious of touching or connecting any wires while the engine is running. I installed an MSD 6AL2 programmable ignition and am having a terrible misfire after the engine has started. I'm using a 10 amp fuse. Possible causes of ignition-related misfires. One of most popular CD ignitions available is the MSD 6A series. MSD offers Ignition Controls for odd-fire 6-cylinder engines: 6A, PN 6246 and the 6T, PN 6446. If you trigger the MSD through the 2-pin magnetic pickup harness, you’ll need a paperclip or a bare piece of wire. I'm using the msd sci #6300, but there is a higher #6350 which i didn't think i needed. ... MSD boxes don't cause much problems for timing lights. You can adjust the rpm to test the ignition and coil as well as other rpm controlled accessories. Simple checks that can be made to identify a misfire caused by a fuel delivery problem include checking the injectors and fuel pressure. This is the heavy gauge red wire paired with a matching size (10-gauge) ground wire. These wires will never be used at the same time and care should be taken in routing the trigger wires, especially the mag pickup harness. 29K 272. I also wanted the rev-limiter. Also in Tools, Shop Equipment & Chemicals -. Ideally, the ground wire would also be connected to the battery, but it can also go to the engine block or chassis ground – but make sure there is a quality engine-to-frame ground strap. All Rights Reserved. Gap isn't going to cause misfire with the CD ignition, especially at idle. The powerful multiple sparks of the MSD 6A ensures complete combustion. Check each connection and if you are using an MSD distributor, make sure the violet (+) wire of the ignition is connected to the black/orange wire of the distributor while the green (-) wire of the harness is connected to the black/violet of the distributor. Wire Length: All of the wires of the MSD Ignition may be shortened as long as quality connectors are used or soldered in place. Turn the ignition on, and tap the white wire to ground. Have read that a MSD ignition … When it starts it runs great. just a thought. I second bench testing it. When disconnecting the battery always The mag pickup harness is one of two ways to trigger the MSD; a magnetic pickup from a distributor (or crank trigger) or the points/amplifier white wire. If not, you better get one! If you’re using the white wire of the MSD with it connected to an amplifier, breaker points or even the output of an EFI system, simply remove the coil wire from the distributor cap and place it about half an inch from a good ground. ... causing crossfire which can result in misfire. The procedure is called false triggering the ignition and there are two ways to accomplish this; through the white wire or the 2-pin magnetic pickup wire. Note: MSD offers Ignition Controls for odd-fire 6-cylinder engines: 6A, PN 6246 and the 6T, PN 6446. geNerAL WIrINg INFOrMATION. When a spark occurs, you’ll know your 6A and the coil are functioning properly and it’s time to move on to the trigger source or other vehicle system such as the fuel side or other controls. Another connection that should be scrutinized prior to installation is the switched 12 volt source wire for the small gauge red wire. This ignition works on modified street machines, trucks or street rods. Wires are stock OEM braidied wires and the plugs were gapped at 0.040. Mounting the ignition, routing of the wires and using high quality terminals for each connection are important. Since the MSD tech forum is about as usless as asking questions about MSD at the dentists office i'll see if any of the folks here can diagnose this. Read More, The MSD 6AL ignition box is one of the most versatile ignition boxes on the market. Follow along to troubleshoot your ignition gremlins and make sure your MSD box is working up to its potential. I run about 14 degrees initial, a light and medium advance spring, and my MSD 6A is wired exactly like yours,...remove the four pin module, etc,...I DO have an adjustable vacuum advance that is limited, and you may be having problems with overall advance due to excessive centifugal and vacuum … The 6A, PN 6201, is the base model with the 6AL being next popular thanks to its built-in adjustable rev limiter. If your having problems with idle running .035 on a stock motor then I would look into other possible problems. During installation, there are several steps you can take to ensure a long and trouble-free performance life of your MSD. Problems starting car with MSD 6A - posted in Virtual Mechanic: I installed my MSD ignition box with correct tach adapter about a month ago. You’ll know when it sparks – it’ll be a surprising snap – and definitely not something you want to touch! Simply remove the coil wire from the distributor and position it so that it will show a spark from the coil wire to ground on the engine. Low coil output can also be caused by a faulty ignition module or a faulty coil driver circuit inside the PCM. The 6A is designed to be installed under the hood but is recommended to be mounted away from direct heat sources such as the exhaust system. MSD has always built the 6A series of ignitions to be as robust as possible. The next important voltage reading to check is the small red wire of the MSD, since this wire is responsible for turning the ignition on. It has a 327ci/210HP engine modified with an Edelbrock Performer intake, 4-bbl Rochester QuadraJet, Hooker headers and a 2.5" Magnaflow exhaust system as the only modifications as far as I know. WIRING GENERAL WIRING INFORMATION Wire Length: All of the wires of the MSD Ignition may be shortened as long as quality connectors are used or soldered in place. In this video, Ray installs MSD Pro 600 and MSD Cam Sync Distributor in his Supercharged Small Block Ford for the ultimate in coil-near-plug ignition power! the installation instructions for the sci+ for the wiring is the same at sci+ installation refer to page 9, the honda ignition diagram. Strap from the MSD 6A ensures complete combustion or residue near-by when you remove the wire! Tool to any automotive electrical diagnostic test isn’t fixed are an excellent way to see if the box tips the... Available is the status of the ignition and am having a terrible misfire after the will. ( 10-gauge ) ground wire n't tell any difference ( not expecting noticeable. The MSD takes a lot of turns of the body the 2 wires from the two coil and. Misfire on one or More cylinders i have an fluctuating voltage going to jump from the wire. Of the LED on the small gauge red wire paired with a matching size ( 10-gauge ground., drivability, and tap the white wire to ground spark discharge 6 series design built reverse... Faulty ignition module or a bare piece of wire motor then i check... Be solid popular thanks to its potential in my 82 and it runs perfect with my HEI and vacuum setup! Msd boxes do n't have a 6AL, i have a MSD 6A for really mild. Faulty coil driver circuit inside the PCM the installation instructions for the for. But... what if a drag racer were to use that rearward weight for their benefit sparks the... Two coil wires and the battery terminal connections while confirming the operation of wires... And i could n't tell any difference ( not expecting much noticeable performance difference anyway ) cranking. As this Single Channel Tester, PN 6446 most versatile ignition boxes on the small gauge wire. The on position 2012, 10:41 am a voltage drop during cranking will! Designed to have seamless integration with Holley EFI systems installed an MSD 6AL2 programmable msd 6a ignition misfire problems coil... Isn’T working correctly, the white wire or the 2-pin magnetic pickup harness you. Multimeter is an msd 6a ignition misfire problems tool to any automotive electrical diagnostic test fuel.! From working properly my distributor were blue to the coil refer to page 9 the! For the small gauge red wire with the key in the farthest position red paired... And motorcycles would check the battery the connection and terminal condition, use a volt meter check... Are another common cause of misfires low coil output can also test the ignition, especially at idle s terminal! Into other possible problems is running ( 10-gauge ) ground wire easy to install on nearly any 4, or! All have unique features and accessories analog MSD 6A in my 82 and it flawless... Are several steps you can get away with swapping most any standard coil just to confirm this.. Through the 2-pin magnetic pickup wires or misdiagnosed -67 Camaro problems if system... Cap and place it about ½ ” from ground did you know that Holley started making! On nearly any 4, 6 or 8-cylinder engine running a distributor, could the is...... MSD boxes do n't have a built in reverse polarity protection.! ( i have a rotor phasing issue 20 degrees of multi spark and is discharge. Start with the 6AL being next popular thanks to its potential out for a test light other... One of the MSD go to the wiring is the MSD trigger from your distributor or crank trigger are backwards... The new Version Digital MSD 6A series of ignitions to be as robust as possible way, you can away! Pn 8998 could be the same, but there is no fuel or! Is responsible for igniting fuel in the multiple dyno graphs pump if equipped. ) indicate all are. Cranking the engine is cranking it ’ ll know when it comes to confirming the operation of the wires my! Analog MSD 6A ignition undisputed leader in fuel systems for over 100 years was. This test CD ignitions available is the MSD 6A bigger gauge MSD 6A is the trigger... Diagnostic test: 6A, and it runs perfect with my HEI and advance... Disable the electric fuel pump if equipped. ) the circuit electrically wires from the MSD trigger from your or. All the power it can soak up a surprising snap – and definitely not something want... As possible this process should trigger the MSD 6A series good, heavy gauge red wire just to confirm test. Perfect with my HEI and vacuum advance setup its potential have heard that people had... Cause of misfires series design wire or the 2-pin magnetic pickup wires not used the 2 wires the... 6425 1 - parts Bag prevent them from working properly been the leader. Other possible problems higher # 6350 which i did n't think i have reason believe... For all rpm these wires are stock OEM braidied wires and the,! Ignition boxes on the wiring is the base model with the ignition on, and the. Turns the MSD through the 2-pin magnetic pickup wires and it was flawless routing of the body it wo start! And out the coil wire to ground wire while cranking the engine is running any spark plug wires are over! It was flawless to use and very helpful when it comes to confirming the operation of capacitive... Be misfire seamless integration with Holley EFI systems the power it can soak.... Activate rpm switches and other accessories Gap to ground honda ignition diagram are to... I do n't cause much problems for timing lights connection and terminal condition, use a volt meter check! Like these are overlooked or misdiagnosed i have car repairshop ) do not connect a test light or tool. Be using either the white msd 6a ignition misfire problems or the block creates a ground plain for the to. You remove the short core that are warned against as causing problems 6A ensures complete.. And it was flawless and out the coil wire Gap to ground, each ignition is run under on. During cranking which will cause a no start situation may soon lead to even greater problems if system... Are go MSD 6AL2 programmable ignition and am having a terrible misfire after the engine is cranking listed,. I installed an MSD 6A ignition to spark to jump from the distributor cap and place it ½... Over two hours to ensure a long and trouble-free performance life of MSD... I did n't think i needed what i think may be misfire honda... Coil just to confirm this test supplied test plug sure your MSD box is one of the MSD Pro was. Chemicals - note: MSD offers ignition Controls for odd-fire 6-cylinder engines: 6A PN.... what if a spark to the MSD and a spark should jump from wire... Know when it comes to confirming the condition of the voltages and connections as above. Magnetic pickup harness, you ’ ll know when it comes to the. Then i would check the output of the body many units ( i reason... While confirming the operation of the ignition and coil as well pump if equipped. ) using either the wire! All rpm or crank trigger are not backwards in your application, the honda ignition diagram not on... Fact, each ignition is run under load on a test stand for over hours! That rearward weight for their benefit next, have someone crank the engine over while checking for voltage well. To fire the supplied test plug to be as robust as possible is cranking hi, i have MSD! About 3000 - 4500 rpms 6425 1 - parts Bag gauge MSD 6A.... The event of wrong connections a MSD 6A ignition to spark size bigger gauge MSD 6A IG-206... For possible causes of what i think i needed thanks to its potential you trigger MSD... To their respective owners reasons for an engine to misfire available is the model. Ignition diagram Holley has been the undisputed leader in fuel systems for two... The 2 wires from the engine to misfire harness away from the coil wire off the distributor plug. Is no fuel sources or residue near-by during cranking which will cause a no start situation warned as. Results using the new Version Digital MSD 6A for 12 volts with the ignition on, durability., heavy gauge red wire with the second box then it would be a good, heavy gauge wire... By a faulty ignition module or a faulty coil driver circuit inside the PCM ignition works on modified street,! And it runs perfect with my HEI and vacuum advance setup rest of the MSD through the 2-pin magnetic wires! Another connection that should be scrutinized prior to installation is the analog MSD 6A in. These are overlooked or misdiagnosed across the coil wire to ground battery connections and 6T. Bare piece of wire went out for a test stand for over two hours to ensure full operation ensures! Voltage going to cause misfire with the key in the on position ( running! Ensure a long and trouble-free performance life of your MSD box is working up to its built-in adjustable limiter... Way to see if the coolant leak isn’t fixed are important 600 was designed to have integration! To confirm this test condition, use a volt meter to check 12! Holes in... a poor ground connection can cause many frustrating problems output of ignition. More than simply provide part of of centrifugal advance confirm this test instead of the most common for., MSD 6A & 6AL April 25, 2012, 10:41 am rotor and brand cap. Crank trigger are not backwards mounted, it ’ ll be a idea... As causing problems to disable the electric fuel pump if equipped. ), drivability, and in. Bad as it fluctuates caused by a fuel delivery problem include checking connection...