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Re: Compression Waveform Interpretation
Posted to Technical Theory Forum on 2/7/2018

The need for spark advance that varies with speed and load is covered in the other responses.

Assuming a cranking RPM of about 250 and a spark time before TDC of 2.5 ms [0.0025 sec], a little arithmetic puts the spark advance between 3 and 4 degrees BTDC. Se... Login to read more.