flyrotary@lancaironline.net Mailing List Archive

Thanks Ed, I do have fuese to the injectors, one for the lead and one for the trail. The fuse box is in the engine compartment. It would not be the end of the world to wire it into the panel and install a swithch, but I feel I have a workable solution. For testing it is easy enough to pull the fuse to one or other of the injectors. To turn off the engine I will still just turn off the key – which controls the EC2 main power and the fuel pump. If I need to turn the engine off sooner I will have to turn off the main battery buss. I see the advantage of using fuel cut out to turn off the engine as keeping the fuel out of the engine to help prevent rusting of the apex seals. Just like in a lycoming when you go to full lean to stop the engine.

Will let you know what happens when I try to ‘make noise’… speaking of which…. It off the airport J

David Leonard

The Rotary Roster:

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You are correct, David. With power to injectors via a separate connection to the battery bus (which I also have) the way I stop the engine is by turning off the fuel injector enable switches which kills power to the injectors but not the EC2. That is how I found out about the "sneak" circuit. I turned off the switch that is dedicated to providing power to the EC2 module which should have kill the engine but the engine continued to run!!. The other option is to kill all power to the system through a master switch. In my case, my EC2 and injectors are wired to the battery bus through switches. So turning off the master switch will not stop my engine. I either turn off power to injectors via the injector disable switches or pull the circuit breaker between the battery and battery bus.

It would seem that at your stage, the simplest thing might be to put a switch in the circuit with your injector fuse (I think you said you had one) to kill power to the injectors. That way you can ensure no power is getting to them. Actually, its not a bad set up, you can play with your EC2 and ignition while assured the injectors will not inject fuel and start the engine.

Ed