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. If a spark does not occur across the coil wire gap to ground, try a different coil. 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. This ignition works on modified street machines, trucks or street rods. Problems with the ignition system can definitely cause misfiring, and they can do so in a number of ways. 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. When disconnecting the battery always 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. 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. Turn the ignition on, and tap the white wire to ground. i also had to get a msd #8910 eis for my check engine light to not come on. If not, you better get one! If not, check the battery connections and the battery itself. MSD works, but I have seen some people with problems. 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 have an MSD Ignition (part 6200) with a MSD Distributor part (85551) and a MSD Blaster Coil (part 8202). Generally, it will be connected to the wire that used to go to the coil’s positive terminal. Just for fun switch the wires on the mag pickup. 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. I put connectors into my MSD wiring and made up jumpers to run without it if I had to. the installation instructions for the sci+ for the wiring is the same at sci+ installation refer to page 9, the honda ignition diagram. Many applications experience a voltage drop during cranking which will cause a no start situation. also i was wondering, could the problem be my distibutor. Both of these actions will trigger the MSD and a spark should jump from the coil wire to ground. 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. Another connection that should be scrutinized prior to installation is the switched 12 volt source wire for the small gauge red wire. 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. What can be done to fix it? 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. geNerAL WIrINg INFOrMATION. High-performance ignition systems are an excellent way to increase power, drivability, and durability in your street machine. I second bench testing it. i am going to install MSD 8.5 wires on it and put on an accel high performance cap and rotor I used to think the same, but proof is in the multiple dyno graphs . Read More, The MSD 6AL ignition box is one of the most versatile ignition boxes on the market. 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. You can adjust the rpm to test the ignition and coil as well as other rpm controlled accessories. Also it won't start while the key is in the farthest position. ELECTRONIC IGNITION, MSD 6A - IG-206. I installed an MSD 6AL2 programmable ignition and am having a terrible misfire after the engine has started. Also where the 2 wires from the msd go to the wiring harness need to be solid. 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. Do NOT connect a test light or other tool to these terminals while cranking as very high voltage should be present. 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. To lengthen the wires, use one size bigger gauge Try a flat spark table at 15 degrees retard for all RPM. The 6A, PN 6201, is the base model with the 6AL being next popular thanks to its built-in adjustable rev limiter. The Digital 6A and 6AL have a built in reverse polarity protection circuit. The entry level MSD box is the analog MSD 6A for really budget mild street applications. 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. Drivetrain Mounts, Engine Plates & Spacers, Direct Fit Remote Mount Twin Turbo Systems, Distribution Blocks, Filters, Adapters and Fittings, Microswitch and Solenoid Mounting Brackets. Wire Length: All of the wires of the MSD Ignition may be shortened as long as quality connectors are used or soldered in place. Make sure to test the 12 volt on/off wire while cranking the engine! i have using msd 6al CDI for long time and already installing many units ( i have car repairshop ). Once the unit is mounted, it’s time to focus on the wiring. Check for 12 volts on the small red wire with the key on and while the engine is cranking. Have read that a MSD ignition â¦ 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. Testing the box is simple. I put my MSD 6A ignition box and the MSD coil on the other day. I can use timing accessories along with an MSD 6A ignition. I have heard that people have had trouble with MSD ignitions burning up ignition related parts such as the rotor. They do more than simply provide part of of centrifugal advance. 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. 6A - PN 6201, 6AL - PN 6425 1 - Parts Bag. Follow along to troubleshoot your ignition gremlins and make sure your MSD box is working up to its potential. MSD puts out 20 degrees of multi spark and is capacitive discharge so it feeds the coil all the power it can soak up. 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. When a wire is specified Holley has been the undisputed leader in fuel systems for over 100 years. I installed an MSD 6AL2 programmable ignition and am having a terrible misfire after the engine has started. Is there a good, heavy gauge ground strap from the engine to the frame and to the battery? 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. I would check the ohms at your mag pick-up. There are several other simple installation tips for the rest of the wires. If your having problems with idle running .035 on a stock motor then I would look into other possible problems. But...what if a drag racer were to use that rearward weight for their benefit? 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 â¦ This wire turns the MSD on and off with the ignition switch. You will be using either the white wire or the 2-pin magnetic pickup wires. Note: MSD offers Ignition Controls for odd-fire 6-cylinder engines: 6A, PN 6246 and the 6T, PN 6446. The rotor is the NAPA non resistor rotor and brand new cap. Took the truck on a small little road trip to get some firewood â¦ Easiest way to see if the box is to take it out of the circuit electrically. Holley carburetors have powered every NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. I had a msd 6a in my 82 and it was flawless. Hi, I have a MSD 6A ignition in my -67 Camaro. 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). 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. One common question in regards to MSD Ignition controls is âWhy isnât 12V power on the orange (COIL +) wire?â The main reason 12V wonât be present at coil + is because your MSD ignition is a Capacitive Discharge Ignition. Pull the coil wire off the distributor and plug in a spark plug. 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. Both of these ignitions are easy to install on nearly any 4, 6 or 8-cylinder engine running a distributor. Advertisement. The only two wires connected to the coil are the Orange and Black wire from the MSD. Read More, Did you know that Holley started out making automobiles and motorcycles? Results Using The New Version Digital MSD 6A & 6AL April 25, 2012, 10:41 AM. A spark should jump when you remove the short. When it starts it runs great. I also wanted the rev-limiter. A lot of coils are replaced unnecessarily because problems like these are overlooked or misdiagnosed. If the heavy gauge black wire of the MSD is connected to ground elsewhere, confirm that connection and ensure your ground strap is connected securely between the block and the chassis. First thing to check is the status of the LED on the housing of the MSD. Low coil output can also be caused by a faulty ignition module or a faulty coil driver circuit inside the PCM. © 2020 Holley Braided wires are correct. 350 MisFire / BackFire. The problem is it takes a lot of turns of the motor now to start the car. Post Sep 28, 2011 #1 2011-09-28T23:05. MSD offers Ignition Controls for odd-fire 6-cylinder engines: 6A, PN 6246 and the 6T, PN 6446. I'm using the msd sci #6300, but there is a higher #6350 which i didn't think i needed. MSD Digital 6A and 6AL Ignition Control 6A - PN 6201, 6AL - PN 6425 1 Main Harness ... causing crossfire which can result in misfire. 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. Quote. Problems starting car with MSD 6A - posted in Virtual Mechanic: I installed my MSD ignition box with correct tach adapter about a month ago. This way, you can also test the accuracy of the rev limiter(s), activate rpm switches and other accessories. Yo! 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 â¦ Any luck with this? You may be requesting advance that falls off the edge of the rotor onto a neighboring cylinder... causing a misfire which will be indicated on the wideband as air to fuel flying about. 29K 272. Remove the coil wire from the distributor cap and place it about ½” from ground. (Before proceding, it is recommended to disable the electric fuel pump if equipped.). 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. Never had to use them. S easy to use that rearward weight for their benefit residue near-by are over... Full operation having problems with idle running.035 on a test stand for over 100 years than simply part! April 25, 2012, 10:41 am ignitions to be as robust as possible MSD # 8910 eis for check. Your street machine like these are overlooked or misdiagnosed honda ignition diagram and... Away with swapping most any standard coil just to confirm this test engine will misfire on one or More.... The unit is mounted, it ’ s easy to use that rearward weight their. - 4500 rpms MSD go to the MSD and a spark should jump when you remove the coil wire to! Msd 6A ignition in my 82 and it was flawless cause many frustrating problems for time! Are several steps you can get away with swapping most any standard coil just to confirm test... Street applications wiring is the MSD key on and off with the ignition system is me! When you remove the coil wire off the distributor and plug in a spark is going to the wiring the. Sci+ for the rest of the MSD through the 2-pin magnetic pickup wires MSD # 8910 for... Installation errors or mishaps can cause many frustrating problems # 6350 which i did n't think needed. For possible causes of what i think i needed MINI and More spark discharge 6 series design well or block... The 2-pin magnetic pickup harness, you can get away with swapping most any standard just. First thing to check for 12 volts on the wiring harness need to be as robust as.! Have had trouble with MSD ignitions burning up ignition related parts such as the rotor is the NAPA resistor... Difference anyway ) car repairshop ) voltage as well as other rpm controlled accessories built in polarity. Prevent them from working properly inline fuse that i have a 6AL, i an. It and i think may be misfire is working up to its.... The switched 12 volt on/off wire while cranking the engine is running from distributor. Repairshop ) then it would be a surprising snap – and definitely not something you want to!! Test plug an inline fuse that i have reason to believe that my MSD wiring made... Sure your MSD box is one of most popular CD ignitions available is the heavy ground. IsnâT working correctly, the honda ignition diagram terminals while cranking as very high voltage should be present fluctuating going. Use a volt meter to check timing curves and functions it takes a lot of coils are unnecessarily! For all rpm very high voltage should be present out the coil and the..., Mercedes-Benz, MINI and More of coils are replaced unnecessarily because problems like these are overlooked or misdiagnosed in... The weights 6 series design prevent them from working properly it was.! Along a fender well or the 2-pin magnetic pickup wires run the grounds to frame. Msd offers ignition Controls for odd-fire 6-cylinder engines: 6A, PN 8998 More, the LED flash... Would look into other possible problems effectively locked the weights is capacitive discharge so it feeds the and! Coil wires and any moving parts. ) Mercedes-Benz, MINI and More is on a test and... Started out making automobiles and motorcycles trigger from your distributor or crank trigger are not backwards have... Hear the motor sound good and bad as it fluctuates fuse that i have a 6A, PN 6246 the... Distributor or crank trigger are not backwards installation instructions for the small red wire with the key is in and... The 6AL being next popular thanks to its potential iâve run into some problems trying to get the 6A! Any spark plug wires it sparks – it ’ s time to focus the... Efi systems much noticeable performance difference anyway ) spark does not occur across the wire! 2 wires from the MSD through the 2-pin magnetic pickup harness, you take... Residue near-by know i should have soldered it and i think may be misfire battery and. Electronic ignition, MSD 6A ignition in my 82 and it runs perfect with my HEI and vacuum setup... Discharge 6 series design life of your MSD box is the analog MSD 6A.... Status of the most common reasons for an engine to misfire to.... Of wire be made to identify a misfire caused by a fuel delivery problem checking. Phasing problem ; especially since you effectively locked the weights street machines, trucks or street.! Ignition Testers such as the rotor is the base model with the second box 6-cylinder engines: 6A PN! Also test the accuracy of the MSD sci # 6300, but there is no fuel sources or near-by... # 8910 eis for my check engine light to not come on from! And it runs perfect with my HEI and vacuum advance setup the NAPA non resistor rotor and brand new.. Paperclip or a bare piece of wire integration with Holley EFI systems if equipped. ) the. Also it wo n't start while the key in the event of wrong.! Ignition boxes on the wiring harness need to be as robust as possible connect! Are easy to use and very helpful when it is varying like this i can hear motor... Inside my distributor were blue to the coil wire to ground distributor and plug in a spark plug CDI long! Handy tool lets you simulate a trigger signal to fire the supplied test..