----- Original Message -----
From: "John Slade" <sladerj@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, March 21, 2004 10:09 AM
Subject: [FlyRotary] air fuel ratio sensor contamination


> I've been running very rich so far.
> Will this have clogged clog or contaminate the air/fuel sensor?
> Should I clean it before beginning the programming? If so - how?
> By the way, I think this bird would take off at 3500 engine rpm!
>
> Regards,
> John Slade (still too scared to try WOT)
>
>
John,

    I have run my engine rich, lean etc for over 100 hours before the O2
sensor had lost enough sensitive to make me decide to replace it.  It was
still working but the range seemed to be decreasing.  I doubt if you have
run your engine sufficient to work about it.  Now if your exhaust is coated
with a lot of carbon then it might be useful to take out the O2 sensor and
clean it off.  If you indicator is showing the top and bottom of the range
as you richen and lean your mixture then I don't think you need to do
anything.

My 0.02

Ed Anderson