flyrotary@lancaironline.net Mailing List Archive

Steve, go back and read the instructions on Mode 1. The operation is different than for mode 3. In mode 1 it does not make any difference how many times you hit the store switch, only the position of PGM (left) knob determines the correction value used when you hit the store button. Also see Mode 9 which is similar to Mode 3. Know the operations of the various modes by heart before tuning the EC2.

Remember that Mode 3 is a fairly fine adjustment. It takes about 25 clicks on the store switch to run to the end of the range in either direction.

If Mode 3 doesn't make any difference it means something isn't right and you should stop everything and fix it. Do not taxi, do not fly, do not pass go, you get the idea. I would suspect a wiring error in the connections between EC2 and PCM panel. It is likely that NONE of the programming modes are working based on your description of tuning results.

Tracy

----- Original Message -----

From: Steve Brooks

To: Rotary motors in aircraft

Sent: Wednesday, October 06, 2004 7:30 AM

Subject: [FlyRotary] Re: #$!%@$ temperatures still high

Tracy,

I have leaned mode 1 as far as it would go. I can turn the mixture control to about 8-9 o'clock and get the correct mixture. I tried mode 3, and it does;t seem to do anything. While watching the air/ratio gauge at about 2000 RPM's, left knob at 9 clicked the store, no change, clicked it 3-4 times more, still no change. This was with the mixture knob at about 9 also, so I could see any change on the LED bar graph of the ratio gauge.

Mixture seems to be rich at every setting, but better at higher RPMs. Lower RPMs are really rich.

Steve

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Tracy Crook
Sent: Tuesday, October 05, 2004 11:00 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: #$!%@$ temperatures still high

>SNIP<
> I have a couple of other nagging issues:
>
> 1) I seem to be running rich. I turned the fuel pressure down
> some (30 PSI
> on my gauge (don't know if it's accurate)). That helped, but running both
> fuel pumps makes the engine run very rich at full power. Turning off one
> pump increases power and smoothness. At an idle, 1000-2000 RMS, if I shut
> off the main fuel pump, the engine smoothes out, and gain a little rpm,
> before running out of fuel.
>
> 2) For whatever reason the "coil test" has stopped working. I used to be
> able to go to the "B" controller, and do the coil test to check
> the leading
> or trailing coils. That doesn't work, and if I turn it to off (I'm using
> the ignition switch), it keeps on running. Used to kill the
> engine before.
> I'm not sure what this is, and haven't really done any testing yet.
>
> Steve Brooks (praying for cold weather)
>> Homepage: http://www.flyrotary.com/
>> Archive: http://lancaironline.net/lists/flyrotary/List.html

To make any meaningful comments I'd need to know if you tried the easiest things first. If the engine is running too rich, did you turn down the mixture control? If so, what happened? If that wasn't enough, did you reduce the injector flow rate? (mode 3). Is it rich at every throttle setting or just a few?

Sounds like something has gone bad with wiring on the coil test issue. Sounds like you still have power to the injectors when you turn the EC2 off causing it to continue running. Correct this right away if so.

Tracy