Re: Electronic Ignition Install - No Spark from Coils


Bruce McCormack
 

Continuity testing a Hall device with a VOM will destroy it instantly. Just in case you were considering it.
O’scope is the way to go.


On 9Nov, 2020, at 11:32, Rick Hole <r.hole@...> wrote:

I’ve seen this in Velocity installations.  Granted I have been retired for 4 years so I may be a voice from the past.
 
Be sure the ignition computer box is getting power and ground (I would measure it at the box connector).  The ignition input must be un-grounded or the ignition in the L, R, or Both.  When grounded the ignition system is deactivated.  (you may have this connection wrong, try it both ways, open and shorted to ground).
 
CAUTION Turning the props could start the engine 
You may want to remove the spark plugs from all cylinders.
 
The alignment of the magnet to the sensor is critical.  Turning the prop slowly may not give sufficient pulse to trigger the spark.
 
You could monitor the sensor with an oscilloscope and observe that the pulses are being generated.
 
Rick Hole
 
From: main@Q-List.groups.io [mailto:main@Q-List.groups.io] On Behalf Of Corbin via groups.io
Sent: Monday, November 9, 2020 10:13 AM
To: main@Q-List.groups.io
Subject: [Q-List] Electronic Ignition Install - No Spark from Coils
 
As we wait for Klaus to get back with us, I thought I would throw it out to this group.  As many know, I am installing a Lightspeed Plasma III electronic ignition system in my Q200.  Following the instructions, we have followed the steps and got to the point where we are rotating the prop to get the spark from the coils.  No spark so we are troubleshooting as best we can including reviewing the instructions for any missed steps.

Power from the battery to the circuit breakers is good and the signal coming back to the warning lights is good (if one coil fails a light comes on,  etc.).  However, we are not registering any power getting to the coils and have triple checked the wiring is connected to the ignition boxes going to the coils.

Could it be that the magnet sensor is not sending a signal back to the ignition boxes therefore no spark?  We wonder if there is a bad connection in one of the magnet sensors.  The other area I  thought it could be is that we are bypassing the keyed ignition for now.  My avionics guy assured me that it is not an area of concern since the way it is currently wired, it is not an open-loop (key in off position).  I still wonder though...

If anyone has any known common failure points please let me know.  We may try and go back out to the hangar this evening.

-- 

Corbin 
N33QR 


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