Hi John, is it possible that your fuel system is constantly
feeding some fuel to your Weber?
That may explain why you have to lean the fuel injectors to
minimum - also, if you turn both injectors off, the engine should quit
immediately – if not where is the fuel coming from?
Jeff
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of John
Sent: Friday, September 18, 2009 1:09 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Mixture Condition
I
have narrowed the mixture condition down to the fact that when it starts to
miss up I can keep it running poorly by turning the mixture control down to
minimum, but if I turn off the primary injectors switch the engine appears
to run okay, the secondary injector switch doesn't seem to make any
difference in the way it runs at 4000 rpm or idle. The injector switches
as well as the wiring harness I purchased from Bob and all wires are soldered
and covered with heat shrink. I checked the best I can with a light and
mirror and everything looks okey under the panel. It runs the same,
rather in mode A or B. On rereading the instructions I see that the coil
disable can only be checked in mode B, so I haven't done that yet.
I
turned of the fuel pump and with the injector switch's off the engine continued
to run until the fuel press was down to 17 pds. and quit. I turned on the
fuel pump (LP) to the Weber and it started immediatly. This condition
started at 7.2 on the hour meter. I really now don't have any idea where
to start looking for the problem. JohnD