John,

How do you shut off the fuel flow to the two systems when you are using the other one?  It seems to me that you must have some fuel flowing to the carb when you are trying to run on the injectors.  Does this system cause you to be susceptible to carb ice even when you are on the injectors?  I looked back and found your pics from 9/17 last year.  Do you have any more?

Bill B 

Jeff,   I went back out and ran the engine again.  The fuel pumps are T-eed of after the gascolator and go to the separate fuel systems, the Weber is on top of the engine, above the fuel level in tank.  I ran the engine on fuel injection and it was working fine when it was cool.  I shut off the primary injector switch and the engine quit immediately like it had always done in the past, but when it go warm (190) and started missing, it ran a lot better with the injector switch off and when I turned the injectors back on it was missing terrible and this time I noticed that the Manifold pressure creep up from 13# to 24# and the EGT on the #1 rotor went down to the bottom of the scale.  I tried the scene 3 times and the results were the same each time with the primary or secondary injector switches on.  Like wise it is a big question to me, as to the change in function in the injector switches. 

Could it be that the computer is flooding the #2 rotor and the reason it doesn't quit when I turn the mixture to full lean at 2000 rpm.  It does run a little better at higher rpm's (like 4000).  

The injectors were reconditioned ones that I got from Bruce T and I'm thinking that the #1 primary injector may not be working when it gets hot.  On the other hand, doesn't the secondary system take over, or is that only at higher rpm's.

If it is a ground condition, it seems like it wouldn't wait until the engine is hot to quit working, it would be happening at any time.  JohnD