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Message
Russell, I tried
the Bosch11027 about a year ago. It fouled quickly and I had the same kind
of symptoms as you. I replaced it with a Bosch 12013, single wire,
which has functioned okay so far. Using mogas only so
far.
Regards,
Tommy<><
Greetings,
I haven't had a
chance to do anything else with my O2 testing, but I've had an odd
thought.
The full story, is
that I originally had erratic O2 readings with the rev-2 configuration.
Primarily, this was staying on the mid, to low end of the scale, but would
then just go away completely, as if it was way too lean. I had
used the same sensor I used before, but now had the EM-2, rather than my old
mixture gauge. It didn't take long before I noticed that the O2 sensor
was falling apart, so it was replaced with the Bosch 11027 sensor that several
of you are using. On the next run, the EM-2 read almost full scale,
and I couldn't do much to change it with the mixture knob. I could hear
the engine getting richer and leaner, but the reading stayed near full
scale. The only time it would change was when I leaned so much that the
engine was starting to cut out, then it would plunge to
nearly zero.
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