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lucittm lucittm is offline
Manassas, VA
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Join Date: Apr 2007
Posts: 1,211
The simple things are what frustrates us the most.

No spark - Make sure you have +12VDC at the + coil terminal when the key is on. If you do not have at least +12VDC, you have a power issue, just trace the line back toward the battery until you get power (oh, and make sure your battery is putting out over 12VDC).

If you do have power on the + terminal of the coil, check the other side to see if it is "pulsing" when the engine is turning over. This will be a signal that goes from 0VDC (ground) to some level depending on the ignition you have. If you don't have this pulse, it is an ignition issue and you should change out the CDI box, Permatune, ignition module or whatever you have. If there is a pulse, you have a bad spark distribution process. Look for a bad rotor (my guess), bad plug wires, bad plug connectors, or fouled plugs.

Good Luck,
1991 964 Polar Silver Metallic Turbo Coupe
Old 04-25-2010, 01:51 PM
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