10-17-2011, 10:05 AM
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Senior Club Cobra Member
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Join Date: Dec 2001
Location: Glendale,
AZ.
Cobra Make, Engine: Cobray-C3, The 60's body lines on todays chassis technology
Posts: 2,302
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Not Ranked
Glad you have her fixed and ready to go. An easy check of the ignition spark quality is just a visual check. The spark at the plug should be neon blue if all is at peak performance. A yellow color points to a coil and more of an orange spark leans toward condenser/coil weakness. The new electronics (MSD) replacing the condenser - contacts of the points -saturation time of the coil does skew this visual test but a crisp blue spark is still ideal.
Remove the easiest plug wire at the spark plug end. Install an old or extra plug in the removed wire and set it on a header tube so the electrode is visible and grounded. Start the engine and check the color. **** don't grab the wire when running or you will become the ground path !!! don't let it arc on a polished valve cover as it will mar the finish. A bit shade tree mechanics but shows you where to start looking and don't get shocked cause 20 to 60KV HURTS.
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