Hi Folks,
Thanks to all who offered suggestions as to why my GRT EIS warning lamp
was permanently on and why my CHT2 sensor appeared to be misreading
(always close to ambient).
The problems have been resolved and everything works perfectly now.
The CHT2 problem was just a bad crimp - the wire just falling out when I
pulled on it. Easy fix.
The errant warning was down to the fuel pressure. I contacted GRT and
they said that they didn't know the settings for a Mitchell sender so I
purchased the recommended VDO sender which they sent along with a wiring
diagram. It turns out that there is a 4.8v exciter wire to which you
connect a resistor before connecting to the Aux1 wire. It would have
been nice to have had this info provided with the unit. I struggled to
remove the Mitchell sender from the engine bay only to find the letters
VDO stamped on it underneath the Mitchell label. Arrggh!
I put in the new VDO sender and hooked it all up. I then adjusted the
GRT and 'voila' it all works just fine.
In light of the recent www.rotax-owner.com video, another task I set
myself was to balance the carbs. As recommended I purchased the TwinMax
unit which is really easy to use. As it turns out I was not far off but
did need some adjustment, so now at the full sensitivity setting it
moves slightly from 0 to less than the 1 division to the left as I run
the power up and down which I will call good. I can feel a difference
with the slight vibration I could feel in the cruise completely gone. I
recommend taking the 45 mins or so it took to get everything done.
Regards,
Martin Tuck
Europa N152MT
Wichita, KS
|