The same thing can be accomplished without removing and exchanging the injectors by using the injector backup procedure.
Steve Boese
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of stevei@carey.asn.au
Sent: Sunday, February 27, 2011 8:09 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: EC2/ Tracy
Hi Brian
You don't have a secondary injector failure do you?
If your Pri and Sec injectors are the same, how about swapping them and run on the secondaries under the staging point and see if she is smooth, thus confirming the Secondaries are OK.
Otherwise if you can run her up on the ground above the staging point and disconnect one sec and then the other, you'll be able to confirm the Sec's are OK.
So if after disconnecting a secondary there is no change, that injector is Duff. With the other one if she goes smooth, it would suggest the other Sec is Duff.