On Aug 20, 2019, at 6:28 PM, Stephen Izett stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:

Why is that Bobby?
I’m trying to remember how I routed the negative to the coils. I know the suppressor capacitors go direct to gearbox plate.
Steve

On 21 Aug 2019, at 2:22 am, William Schertz wschertz343@gmail.com <flyrotary@lancaironline.net> wrote:

Check that the Coils are grounded TO THE ENGINE (DIRECT)

On Mon, Aug 19, 2019 at 8:27 AM Bobby J. Hughes bhughes@qnsi.net <flyrotary@lancaironline.net> wrote:
It happened during initial ground runs and troubleshooting. This is
being made public knowledge for a friend:) Bobby

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] Sent: Monday, August 19, 2019 9:07 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: EC3 Coil Diagnostics

Booby are you postulating what might happen, or did this actually happen
to you? - The HT fried the processors!

Steve

On 19 Aug 2019, at 9:42 pm, Bobby J. Hughes bhughes@qnsi.net

<flyrotary@lancaironline.net> wrote:

Just make sure to position / secure the plugs so than cannot fall off

the engine and into the wiring harness during the test.   It does not
end well for the controller.

Bobby


-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] Sent: Monday, August 19, 2019 8:21 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: EC3 Coil Diagnostics

This is what the manual says:
"Remove all the spark plugs from the engine (or connect the plug wires

to spare plugs) and lay them on the engine where you can see the spark

gaps. Make sure the body of the plug is in contact with something grounded to the engine. Now put the Mode switch in Mode 8 and press

the

Store switch. This puts the EC3 in ignition diagnostic mode and fires all the coils as if the engine were running at about 3000 RPM. You should see all plugs firing. To end this diagnostic mode, change the Mode switch selection or cycle the power off on the EC3."
(EC3-A8 13B ENGINE CONTROLLER 07-30-13 INSTALLATION AND PROGRAMMING GUIDE 2008 series)

Sure you've got +12V power to the coils?
Are the coils properly grounded?
Coils wired correctly to EM3?
Note the different coil pin-outs from brand to brand.

If yes, I guess you'll have to inspect the program code.

Finn

On 8/19/2019 8:46 AM, Stephen Izett stephen.izett@gmail.com wrote:
Hi Guys

For those of you with EC3???s.
I wanted to check all coils were firing yesterday so plugged the

leads into plugs laying on the top of the engine.

I tried to enter the coil diagnostic with Mode 8 and pressing Store.

I got nothing.

So I checked the injector diagnostic Mode 1 Cold Start plus Store and

the injectors all lit up.

Am I missing/forgetting/Misreading the manual or something else?

Cheers

Steve Izett


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