Mode 3 has to be
programmed with the engine running, but the mixture is so rich that the engine
wont start.
I had something of a chicken and egg problem, Tracy. Even if I could get
her running the exhaust was so full of soot that the sensor was getting
coated in a few
seconds. I figured a way out of the loop this afternoon.
EC2 doesnt know the difference between fast
cranking and running. I took out the plugs, selected
mode 3 with the knob to the left, cranked for a few seconds, then hit the
program button twice while cranking. I put the plugs back and she fired right up.
No more black smoke. Now I'm in the ball park I can install a new sensor and do
some fine tuning.
This might help anyone else with four 550 injectors. Just knock the overall
mixture down a couple of notches while cranking, before even TRYING to
start the engine and ruining plugs and sensors.
One other problem
I found was a bit silly, but you can add it to you're list of dumb things people
can do....
The mixture control knob
had come off a few weeks ago, and a helpful friend had put it back on for me -
90 degrees out. There are 2 set screws 90 degrees apart. He'd tightened it up
with the wrong set screw on the flat so the mixture was 90 degrees out. No
big deal until you come to do some mode programming where you match the
mixture knob orientation with the program knob. They were out of sync, so I was
programming 90 degrees richer than intended each time. I realigned the
mixture knob, reloaded you're defaults, copied them to B and started to make
some progress.
Thanks for the help
everyone.
Regards,
John (back to taxi testing)