Timing Fluctuations If your timing seems to be jumping all over the place, check the following items What kind of timing light are you using? Many lights have trouble reading the MSD's capacitive discharge multiple sparks. Dial back timing lights

Magnetic Pickup in the Distributor The magnetic pickup in MSD Distributors can also be checked with an Ohm meter to make sure it is within operating specifications. Once again, connect the Ohm meter's leads to the two terminals of the

Spark Plug Wires If you suspect a spark plug wire to be open causing poor performance, check the resistance of each wire. By checking the resistance of each wire you will determine two things That there is continuity (not open)

 Tachometer Operation If your tachometer doesn't read correctly after installing an MSD, you may need a Tach Adapter. On GM vehicles, first remove the tach filter. There are two MSD Tach Adapters. Contact MSD Tech with the manufacturer of your

Import Vehicles If your fuel injected import vehicle fails to start or the tachometer reads erratically, you will need an MSD Tach Adapter PN 8910. If the PN 8910 is installed and you have spark but the vehicle will still

  Engine Run-On If your engine continues to run even when the ignition is turned Off you are experiencing engine Run-On. This usually only occurs on older vehicles with an external voltage regulator. Because the MSD receives power directly from the battery, it does not require much current to keep the unit energ

Checking The MSD Ignition For Spark The following test will determine if your MSD is producing a spark. (image) White Wire Trigger If you are using the White wire (points or electronic amplifier) of the MSD to trigger the ignition,