Fearless
Well Known Member
I have wired my plane using toggle switches to control the magnetos and starter on my O-320. I utilized the setup with the switches from the Z-11 drawing in the AeroElectric Connections manual. I am pretty sure that I have my magnetos and engine timed correctly. I don't seem to be getting any kind of spark at the cylinders. How can I find out if I am getting any current through the leads or what resistance I should be getting though the wires from the switches. How do you check the spark at the wires at the plugs? The switches seem to be working correctly. When I try my left mag switch to the start location the starter turns over. When I try to turn on my right mag switch with the left mag engaged the starter circuit is disabled which is correct(my left mag has the impulse coupling). Dealing with electrical systems is not my strong suit. I have new plugs and wires in the install and my magnetos were serviced before this engine was rebuilt. I am getting fuel up through the carb when I move the throttle.
If the timing was off on the magnetos and engine - if I was getting spark through the magnetos wouldn't the engine try to do something?
This is the last step for me to get to my inspection - to get this engine to fire off - I am so discouraged right now.
The plane is at an airport over an hour from my house so these empty trips is starting to wear me down.
If the timing was off on the magnetos and engine - if I was getting spark through the magnetos wouldn't the engine try to do something?
This is the last step for me to get to my inspection - to get this engine to fire off - I am so discouraged right now.
The plane is at an airport over an hour from my house so these empty trips is starting to wear me down.