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Buly, it doesn't seem like I'm being of much help with your problem. Since you have a good spark, yet you don't appear to get a good start and the plugs are wet, it (no surprise to you, I'm certain) certainly appears that too much fuel is being injected on start-up. I believe you indicated that prior to sending your Ec2 back to Tracy that all was working OK???
The possible causes could be:
1. A short or mis-wiring that unintentionally results in more fuel (like the cold start shorted to ground).
2. A leaking injector that is stuck open so that as soon as the fuel pump is turned on its squirting fuel into the engine. (A quick check is to turn on your pumps and see how fast the pressure leaks down in your fuel line).
3. There is some mal-function within the Ec2 (unlikely but can never complete discount it)
Here is a suggestion:
1. Disconnect the injector harness to both of your Secondaries and try to start the engine with just the primaries connected. (tie the disconnect harness out of the way so it doesn't get caught in fan belts etc). If it doesn't start - check condition of your plugs.
2. Disconnect the injector harness to both your primaries and reconnect your Secondaries and try to start the engine with only the Secondary connected. If it doesn't start check condition of your plugs.
3. Disconnect both harnesses and try to start the engine (if leaking injector you may still get fuel in the engine). Again check condition of your plugs.
See if you notice any difference in engine start/plug conditions - certainly one or other modes should change something and that hopefully will give you a clue.
Ed A
----- Original Message ----- From: <atlasyts@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Saturday, October 15, 2005 8:09 AM
Subject: [FlyRotary] Re: Flooding on startup....
Thank you Ed and Steve. Looks like my understanding of the f. injection is right. I checked the spark and I'm getting very good spark at the spark plugs, but again they get dripping wet right away, even with secondarys turned off? I'm not using the "cold start" feature.
I restored the factory settings on the EC2. Maybe I'll start reducing the injector flow in mode3?
Buly
From: "Steve Brooks" <prvt_pilot@yahoo.com>
Date: 2005/10/15 Sat AM 06:06:10 EDT
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: Flooding on startup....
Buly,
I believe that you are right about the EC-2 providing an intermittent ground
to pulse the injector. With that said, when the injector isn't being turned
on, you would see the 12 V on both leads of the injector. The supply side
is obviously 12 V and also on the other because the injector has a fairly
low resistance, and the EC-2 lead is not pulling it to ground (open).
I hope that makes some sense.
Maybe someone else can explain it better.
Steve Brooks
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On
Behalf Of atlasyts@bellsouth.net
Sent: Friday, October 14, 2005 11:55 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Flooding on startup....
Tonight I spent some time checking around the engine. With both inj.
switches on, I have 12V on all the wires going to the injectors? As far as I
know, there is one 12V feed from the switch to each P/S injectors and one
wire for each injector comming from the EC2 providing intermitten ground. If
I'm right, how come there is the same voltage on all the wires?
Buly
BTW few months ago the engine was running perfect? I have no idea what
caused all this trouble?
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