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Hi Chris, Dave
Don't get discouraged - or rather since that is
understandable - get over it! Look upon it as a "learning experience"
{:>).
Seriously, it can be discouraging to feel like you have
lost ground, but you'll get this fixed. The engine has run with the
current set up so you know its got to be something relatively simply like a
loose connection. You indicate you are getting spark, so that leaves fuel
and it sounds like that is your problem.
One clue is you checked for power on the Resistors and
found NONE? on the secondary resistors? but found power on three of the
injectors? Rather strange.
If I understood you correctly - that should not happens -
as both primary and secondary should be getting power through the 4
resistors. There should be voltage to the primary resistors when your
primary injector switch is ON and there should be voltage to the secondary
resistors when your secondary injector switch is ON (and of course your main
power on).
There should be voltage on the injector
switch side of the resistors (with the injector switches ON),
there should also be voltage on the injector side of the
resistors and you should be power at all four injectors when ever both injector
switches are ON. If there is NOT then you have a switch, wiring or
resistor problem. Check with a voltohm meter and make certain a resistor
has not opened up (unlikely but could happen) - that would prevent voltage
to one of your injectors.
If so that implies either your injector disable
switch for your secondary is turned off (no power -but you have checked that) or
you have a loose connection. A click once in a while suggests perhaps an
intermittent connection.
Here is something you can try even without the simulation
mode installed. In mode zero with your fuel pumps OFF and
power to your EC2 and the injector switches ON, push the
program store button.
This mode acts like a the push of a primer button and the
injectors (all four) should click. They should click every time
you push the store button with mode zero selected on the thumb wheel. If
it does - then that indicates the EC2 is communicating with the
injectors. So one of you sit in the cockpit and periodically push
the store button and the other listen for the clicking of injectors. If
the all four click each time, then the EC2 is talking to them - if that is the
case then I would start looking elsewhere. I
f you are getting sparks then it would appear the CAS is
doing its job, but there are two input wires from it to the EC2 - I am not
certain the effect if say one of the wires was disconnected and the other one
was still connected - it might be possible to get a spark it might not be
properly synchronized with the engine rotation - So just check all wires to the
CAS and make certain they make a good connection.
That's all I can think of for the moment - more
information as you get it will be useful.
Let us know what you find.
Ed
----- Original Message -----
Sent: Saturday, June 02, 2007 11:20
PM
Subject: [FlyRotary] Houston, we have a
problem...
I plan to go back and read the list, espcially
the stuff on Buly's recent issues, HOWEVER,
I went out to the airport after work today to
show off my running engine to him. I flipped the switches UP <g>,
hit the start button and it started up. It ran for a bit fine, but since
I was afraid I may be running it too fast and don't want it to get too hot (if
you remember we do not have any sensors or the monitor hooked up yet, so we
have been VERY conservative since first start on Wednedsday) I throttled back
to slow down the engine. I must have throttled back too much and the
engine died. I have had this happen before, so I pushed the starter
button again and the engine just turned over and would not fire. Sounded
just like it did on Tuesday when we had the injector switches reversed
on/off...so, seemingly, no injectors. Nothing unusual happened...no pop,
no bang, no sparks, nothing.
My ECU does not have the trouble shooting upgrade
yet, so I checked the plugs while turning over the engin with fuel pumps
off (no prob on as of yet) and I have spark. However, we do not seem to
have any noise coming from the injectors at all. I tried on both A and B
to no avail. After checking to see if any wires had come loose and
other basic trouble shooting, I was becoming frustrated (and a little
angry) and for the first time in my 4.9 year build I was
feeling a bit discouraged.
I am new to fuel injection and ECU's. Any
quick guidance y'all may be able to provide on where to start will be
appreaciated. I did check to see if the injectors were getting any power
by using a test light where the wire goes into the injector housing and three
seem to be getting power on both wires (both primaries and one
secondary)....every once and a while during this "test", I would hear a slight
click, but that was inconsistant. When I checked for power at the
resistors (as our set up uses them), the primaries did show power but the
secondaries did not.
This has probably all been coverd on the list and
I will try to find it, however, I am about to hit the sack since I get up at
4:30 am for work and 10:15 pm is well past my bedtime <g> I did
take off tomorrow and I hope to spend most of the day in the hangar, so any
quick insight that I can apply tomorrow is greatly appreciated. Heck,
just y'all allowing me to vent for a few minutes is reelly helpful.
Thanks.
All the best,
Chris
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