Re: No - a tap is not needed

Posted by Jerry/MT on April 29, 2005 at 11:03:54 from (206.183.120.243):

In Reply to: No - a tap is not needed posted by jdemaris on April 29, 2005 at 06:51:03:

The piezo pickup uses the mechanical motion (pulse) of the fuel line, however slight, as the plunger builds up the fuel pressure to generate a small voltage that is the signal that that the injector fired. I'd imagine there would be an amplifier to make the output larger enough to trigger a timing light.

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