Home › Forum › Ask A Member › Condenser Capacitance › Reply To: Condenser Capacitance

#228128
frankr
Participant

    Ok guys what happens when you run the wrong capacitor in your motor? No spark? No performance? Coils get ruined? I see in most of the charts that the .2uF is quite common. Spark is generated the same way by magnetism.

    BTY some of us have not received our magazine yet!

    dale

    As I tried to say, the capacitor charges up in one direction, then discharges in the opposite direction, in series with the coil. Several factors combine to affect the voltage that it charges up to. A higher charge voltage in series with the coil voltage creates a higher reverse current through the coil, which results in a higher AVAILABLE spark voltage. AVAILABLE emphasized because the actual spark voltage only rises till it jumps the plug gap. Then it’s all over till next time. In other words, the actual spark voltage is rarely the maximum it can produce. BUT if it it cannot produce enough to jump the gap reliably, you get no-start, hard start, missing, etc etc.

    And of course the pitting issue is another result.

    • This reply was modified 5 years, 9 months ago by frankr.