|
Hej, hi, George and Bob,
Looking at your problem I came to the following possible cause for your faulty tacho reading. The CDI unit is based on an oscillator generating the charge voltage/current for the capacitor. It could be that there is a ripple voltage on the terminal for the tacho (coil + terminal), which triggers the tacho input on top of the spark triggering.
A simple capacitor/resistor network and a diode could perhaps solve the problem. George, Do you have access to basic electronic components? Of course the 6 cilinder preset is correct.
Otto
|