Autonerdz forums

Here is a strange one. I was demonstrating the scope to a friend and one of the tests I showed him was a relative compression test using battery voltage with a inverted signal.

This bike has equal compression using a manual tester. Look at the attached file. It turned out the spacings between tdc for each cylinder is not equal. I've added some lines to show the spacing difference.

This is a good waveform for Honda VFR800 5th gen.

I fully agree this tests invalid but this waveform is a good known waveform. All cylinders were manually pressure checked and all with 5psi of each other.