Oddity today. Car always turned around ver and started with no effort. Today, it seems that I am not getting power to the coil. Now it spins and no fire.
Thoughts?
Thoughts?
Need help with MSD ignition
- Thread starter Justasgood
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Open up the box. You'll probably find the power wire melted off inside. .
I looked and the back is sealed(or at least a closed panel
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I've repaired more than one. The box comes apart.
I would use a test light and see where you have power and where you don't starting at the source
Rebelrouser
Well-Known Member
There should be a small red LED on the box, if it is flashing while cranking your distributor is sending a signal to the box. You can also take a jumper wire and make the box fire as well to check it. Troubleshooting Techniques
Yup, got the light, then 5 flashes and tried to trigger it.
Don67Satellite
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MSD 6A/6AL DIGITAL CHECKING FOR SPARK
If triggering the ignition with the White wire:
1. Make sure the ignition switch is in the “Off” position.
2. Remove the coil wire from the distributor cap and set the terminal approximately 1/2" from ground.
3. Disconnect the MSD White trigger wire from the distributor.
4. Turn the ignition to the On position. Do not crank the engine.
5. Tap the White wire to ground several times. Each time you pull the wire from ground, a spark should
jump from the coil wire to ground. If spark is present, the ignition is working properly. If there is no spark skip to step 6.
If triggering with the Magnetic Pickup:
1. Make sure the ignition switch is in the “Off” position.
2. Remove the coil wire from the distributor cap and set the terminal approximately 1/2" from ground. 3. Disconnect the MSD magnetic pickup wires from the distributor.
4. Turn the ignition to the On position. Do not crank the engine.
5. With a small jumper wire, short the MSD’s Green and Violet magnetic pickup wires together several
times. Each time you break this short, a spark should jump from the coil wire to ground. If spark
is present, the ignition is working properly. If there is no spark skip to step 6.
6. If there is no spark:
A. Inspect all of the wiring.
B. Substitute another coil and repeat the test. If there is now spark, the coil is at fault.
C. If there is still no spark, check to make sure there are 12 volts on the small Red wire from the
MSD when the key is in the On position. If 12 volts are not present, find another switched 12
volt source and repeat the test.
D. If, after following the test procedures and inspecting all of the wiring, there is still no spark, the
MSD Ignition is in need of repair. See the Warranty and Service section for information.
If triggering the ignition with the White wire:
1. Make sure the ignition switch is in the “Off” position.
2. Remove the coil wire from the distributor cap and set the terminal approximately 1/2" from ground.
3. Disconnect the MSD White trigger wire from the distributor.
4. Turn the ignition to the On position. Do not crank the engine.
5. Tap the White wire to ground several times. Each time you pull the wire from ground, a spark should
jump from the coil wire to ground. If spark is present, the ignition is working properly. If there is no spark skip to step 6.
If triggering with the Magnetic Pickup:
1. Make sure the ignition switch is in the “Off” position.
2. Remove the coil wire from the distributor cap and set the terminal approximately 1/2" from ground. 3. Disconnect the MSD magnetic pickup wires from the distributor.
4. Turn the ignition to the On position. Do not crank the engine.
5. With a small jumper wire, short the MSD’s Green and Violet magnetic pickup wires together several
times. Each time you break this short, a spark should jump from the coil wire to ground. If spark
is present, the ignition is working properly. If there is no spark skip to step 6.
6. If there is no spark:
A. Inspect all of the wiring.
B. Substitute another coil and repeat the test. If there is now spark, the coil is at fault.
C. If there is still no spark, check to make sure there are 12 volts on the small Red wire from the
MSD when the key is in the On position. If 12 volts are not present, find another switched 12
volt source and repeat the test.
D. If, after following the test procedures and inspecting all of the wiring, there is still no spark, the
MSD Ignition is in need of repair. See the Warranty and Service section for information.
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