|
|
Hummm, not good. You indicated that you could get the injector to click by grounding the EC2 side which is what should happen. That implies they are getting the 12V they need, but it sounds like the EC2 is not grounding them internally as it should. Since each injector has its own lead its hard to see that all four would have a wiring problem going to the EC2 - you did hook them back up did you not ?(just joking). You might think the EC2 except it is apparently firing the spark plugs in mode 8 simulation OK.
I presume you have tried putting the EC2 in mode 0 with the engine off and pumps on and seeing if you could squirt fuel in by depressing the store button - although with your engine in the back you would need someone to tell you if they were clicking.
If I were to bet, I'd say it sounds like the wiring from your EC2 to your injectors is not making connection - I presume you have the injector switches on when doing this as you had 12V to the injectors when you made them click. I can't think of anything else at this moment, but to take a volt/ohm meter and confirm connectivity from the EC2 terminal (pin) to the injector(s).
Ed
----- Original Message ----- From: "Bulent Aliev" <atlasyts@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, May 13, 2007 9:30 PM
Subject: [FlyRotary] Re: Frustrating Sunday
Hi Ed,
That was one of the test Tracy asked me to do. The injectors were silent?
Buly
On May 13, 2007, at 8:23 PM, Ed Anderson wrote:
You probably tried this, but thought I would ask, Buly. Did you put it in mode 1 and hit the store button. That should have the injectors clicking like mad - make certain fuel pumps are off before you do this or you will flood your engine (don't ask how I know). Since you indicated it fire off from residue fuel in the chamber when testing the spark plugs, it sounds to me like you are not getting sufficient fuel.
Ed
----- Original Message ----- From: "Bulent Aliev" <atlasyts@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, May 13, 2007 8:08 PM
Subject: [FlyRotary] Frustrating Sunday
This morning I was all primed up to fire my newly updated EC/EM. Pulled the plane out got all set up and hit the primer button:
Silence? Tried starting: Nothing.
Pushed it back in the hangar and started trouble shooting.
Fuel pressure: Yes
Power to all 4 injectors: Yes
Grounded one at the time all 4 wires from the EC2 plug and all 4 injectors did "click"
Checked the injector return lines: they are grounded as they should be.
Called Tracy and he suggested testing Mode 8 spark plugs: worked fine
The EM2 is flashing 0/NOP where the RPM should be?
Since Tracy is leaving for 3 weeks on Tuesday, I'll have time to follow up on ideas from all, incl. Tracy :)
When John Slade was here, we used to swap EC boards to make sure it is not our fault. Now he's gone to CT.
BTW when you are testing the engine ignition in MODE 8 with the spark plugs on the engine, make sure there is no one around the prop. My engine fired momentary two times without the starter being engaged, injectors off and fuel pumps off. Any fuel fumes inside will ignite if you hit the Save button in Mode 8
Finally at 7 PM I felt in a dead end, shut the hangar and headed home. Feel like where I was 2 years ago.
Bulent "Buly" Aliev
FXE Ft lauderdale, FL
http://tinyurl.com/dcy36
--
Homepage: http://www.flyrotary.com/
Archive and UnSub: http://mail.lancaironline.net:81/lists/ flyrotary/List.html
--
Homepage: http://www.flyrotary.com/
Archive and UnSub: http://mail.lancaironline.net:81/lists/ flyrotary/List.html
--
Homepage: http://www.flyrotary.com/
Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html
|
|