RE: EI Timing for conversion engine
The ignition triggers just as the magnet leaves the sensor. If you turned the crankshaft in the wrong direction when setting the timing, your timing will not be at 28 degrees before top dead center. It will be off 12 degrees total advance if you turned the crankshaft opposite the direction of normal rotation.
That means that in starting mode, your timing is probably some 8-10 degrees after Top Dead Center depending on your method of setting the timing?