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Old 07-20-2018, 03:26 PM
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Bill Hanlon Bill Hanlon is offline
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Join Date: Feb 2005
Location: Fredericksburg, TX
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A VERY rookie question here:

Given that these timing wheels mount on the crankshaft, how does an EFI unit or a "coil per plug" electronic ignition that operates from a crankshaft timing wheel know that it is "time" to do their job and not one revolution away? I can understand how it would work if the timing wheel was driven off the camshaft (1/2 crankshaft speed).

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