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  The Autonerdz Community Forums › General Public Area › PicoScope › pico diagnostics cylinder balance
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pico diagnostics cylinder balance (Read 3,709 times)
autosparky
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pico diagnostics cylinder balance
Nov 16th, 2010 at 1:01am  
can someone explain how Pico does a cylinder balance test while only connected across the battery?? how does it work out engine speed?
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darren s
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loxton, South Australia, Australia
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Re: pico diagnostics cylinder balance
Reply #1 - Nov 16th, 2010 at 3:30am  
I am only guessing but thought it may use the AC (diode test) as a frequency and work out the Alternators increase and decrease in revolutions. Hence the relative power produced??
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PaddyIreland
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Re: pico diagnostics cylinder balance
Reply #2 - Jan 2nd, 2011 at 9:01am  
Most likely voltage drop. Max current at starter motor is on compression stroke. So would also be max voltage drop. Differences in voltage drop would indicated differences in compression. Two compression strokes per revolution will give RPM.
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