i am going to install MSD 8.5 wires on it and put on an accel high performance cap and rotor Every Ignition Has Two Sides. I put my MSD 6A ignition box and the MSD coil on the other day. First thing to check is the status of the LED on the housing of the MSD. Another connection that should be scrutinized prior to installation is the switched 12 volt source wire for the small gauge red wire. 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. A spark should jump when you remove the short. 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. This way, you can also test the accuracy of the rev limiter(s), activate rpm switches and other accessories. Every … MSD 6A. Testing the box is simple. just a thought. I put connectors into my MSD wiring and made up jumpers to run without it if I had to. A lot of coils are replaced unnecessarily because problems like these are overlooked or misdiagnosed. Never had to use them. I have an inline fuse that i used connection butts. Possible causes of ignition-related misfires. If you trigger the MSD through the 2-pin magnetic pickup harness, you’ll need a paperclip or a bare piece of wire. Make sure to test the 12 volt on/off wire while cranking the engine! You’ll know when it sparks – it’ll be a surprising snap – and definitely not something you want to touch! Holley carburetors have powered every NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. i also had to get a msd #8910 eis for my check engine light to not come on. If not, you better get one! It’s a very useful tool if you have rpm activated switches or to check timing curves and functions. A multimeter is an essential tool to any automotive electrical diagnostic test. I installed an MSD 6AL2 programmable ignition and am having a terrible misfire after the engine has started. Problems with the ignition system can definitely cause misfiring, and they can do so in a number of ways. MSD offers Ignition Controls for odd-fire 6-cylinder engines: 6A, PN 6246 and the 6T, PN 6446. the wires inside my distributor were blue to the pick-up and black to the coil. 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. So lets say that I have a rotor phasing issue. They do more than simply provide part of of centrifugal advance. Mounting the ignition, routing of the wires and using high quality terminals for each connection are important. There are different models available that all have unique features and accessories. In fact, each ignition is run under load on a test stand for over two hours to ensure full operation. Any luck with this? MSD has always built the 6A series of ignitions to be as robust as possible. i know i should have soldered it and i think i have an fluctuating voltage going to the box. Generally, it will be connected to the wire that used to go to the coil’s positive terminal. Just thinking out loud, looking for possible causes of what I think may be misfire. 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. 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. 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. 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. Easiest way to see if the box is to take it out of the circuit electrically. Reconnect the original ignition wiring. Ignition Related. 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. To lengthen the wires, use one size bigger gauge wire (10 gauge for MSD ignition problems MSD ignition problems. The ignition system is responsible for igniting fuel in the engine's combustion chamber. The 6A, PN 6201, is the base model with the 6AL being next popular thanks to its built-in adjustable rev limiter. 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