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Old 07-25-2011, 09:06 PM
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67Mustang Al. 67Mustang Al. is offline
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I tracked a faulty ignition module down which missed when it became warm by using an inductive timing light with the pickup clipped to the high voltage coil lead (not the plug leads) and when it starts to miss you can look at the strobe light to see if it has gone out and comes back on. You will need to duct tape the light to somewhere visible so you can glance at the light while powering up the engine on the track. Sometines its hard to tell between a fuel misfire and an electrical misfire but the timing light will still keep on strobing if the ignition system is up to scratch and the 3 psi fuel is starving your engine.
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