Why the old box had no spark is beyond me. Make sure the ignition switch is in the off position.
Msd Ignition Run On The Amc Forum
Msd ignition box problems. Occasionally it will not start altogether. So its not the first time but it seems ive got a box brand new from msd that doesnt work. Rats speed shop kauai hi. Car still isnt firing though. How to wire gm hei distributor to msd ignition box how to diy duration. Next day it will start or sometime later.
This creates a magnetic field that builds strength thanks to the help of the iron core. The new box was purchased from summit. Took the old box that i thought was crap and hooked it up direct as well. It hick ups intermitantly like someone is quickly switching the ignition on and off. In a typical factory style inductive ignition current from the battery flows through the thicker primary windings when the switching device points or magnetic pickups is closed. Tested it and voila got spark.
I had it installed with an msd adaptor harness for the application. Remove the coil wire from the distributor cap and position the terminal so it is approximately 12 from a good ground. You can also perform this test by disconnecting the two prong lead from the msd distributor to the 6a box. I disconnected it completely and so far cross my fingers the problem has gone away. Msd explained in depth just how this occurs. A new box solved the problem.
If there is a spark between the coil wire and the engine then both the 6a box and the coil are working which means the problem lies with the ignition pickup in the distributor. Disconnect the msd white wire from the distributor points or the ignition amplifier. Turn the ignition to the on position. After testing it it seems fine.
Gallery of Msd Ignition Box Problems
