Many enthusiasts are so focused on choosing parts that they sometimes overlook little things in assembly that will improve their engine’s durability as well as its performance. After installing the cover to the engine, install and test fit the distributor. Be sure that the cam bearing or bearing journal (or both) is grooved. The diagram below shows the proper installation for early Ford Many of MSD’s Ignition boxes offer the ability to adjust the timing right on the ignition box. Hello Everyone, I Hope what I am about to post regarding my brand new MSD 6AL Digital box (Part # 6425). I sent it back to MSD and they couldn't fix it. Connect thet wire going to the tachometer to the MSD 6 series ignition unit Tach Output Terminal as show above. Read honest and unbiased product reviews from our users. Installation to an MSD DIS-4 Ignition using Four Channels. If you hook it up exactly like my post above, it will work. Disconnect both wires from the filter and leave disconnected. Remove starter saver starts and runs fine. On Chevrolet engines, if the timing is retarding inspect for cam-walk. I think MSD and Summit needs to make things more clear and put a disclaimer before more people run into the same problem as I did. Message Seller + Add to Favorites. At the track today I replaced the coil and crank trigger pick up. Worn distributor gear, inspect the distributor gear for excess wear or incorrect gear mesh if the gear is riding too high or too low on the cam gear. After playing around more I noticed that car only runs normal and pulls up to normal RPM when the MSD box rev limit is set on zero!! An erratic tach or non working tach is a result of the factory wire being removed from the coil -. The zinc will help the gears mate. I've had my share of problems with my MSD set-up; however it looks like they made some improvements in their electronics with the 6AL-2. Note #1: There are basically two types of tachometers: Current Triggered Tachometers and Voltage Triggered Tachometers. the MSD ignition box , 6AL unit that wasn't working anymore. If it does not operate correctly, go back to the Chart to determine which MSD Tach Adapter should be used. For instance, the Programmable 6AL-2 connects to a PC where the user can map out a timing curve for their application. 2. These grooves redirect a small amount of oil to the timing chain and the fuel pump eccentric. Disconnect the MSD White wire from the distributor points or the ignition amplifier. It's depth is good. When installing the timing cover during final assembly, do not overlook installation of the dowel pins in the block. The MSD Programmable 6AL-2 Ignition can be used with most stock coils and aftermarket coils designed to replace the stock coils. Amp Ignition Control Box. Using an oil pump priming tool, look for oil streaming around the outside of the distributor drive gear. From developing new therapies that treat and prevent disease to helping people in need, we are committed to improving health and well-being around the world. Find helpful customer reviews and review ratings for MSD 6421 6AL-2 Ignition Control with 2-Step Rev Limiter at Amazon.com. and GM vehicles. The camshaft retaining bolt and washer serve a dual purpose. This post may be a little long but I hope this bit … The MSD can be used with 16 volt batteries and can withstand a momentary 24 volts in case of jump starts. Second, and this was one of my problems that made me pull my hair out. Their installed height is important as they constitute the camshaft thrust button. The shielded wire and problem still occurs but now at 5800rpm instead a PN will... Oil is fed to the distributor msd 6al troubleshooting failure switch, and i believe i was correct in that.... The rear of the cam timing sprocket is another chamfer, along with six small grooves on the key. 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