[Diy_efi] Ways to effectively use O2 sensor on motorcycle?

Fri May 31 12:41:53 GMT 2002

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Hi list.  If there is a more appropriate list for this subject, please
advise.

I have never tried to interpret the output of an O2 sensor.  In this
particular case I am looking to use a DMM to figure out if which carburetor
circuits are creating lean or excessively rich air/fuel mixtures.  The DMM
has 5ms resolution in "capture" mode which records the lowest and highest
values ( volts DC from sensor ) while in the mode.  An tone is produced when
a new low or high is recorded which, if it can be heard while riding, might
give some indication as to which carburetor circuit is responsible.  If not,
I'll just retrieve low and high value after the ride, adjust accordingly,
and test again.

Before I have a bunghole welded and mount the Bosch Universal O2 sensor
 part # 11027, single wire, unheated ) I'd appreciate peoples comments on
the effectiveness of this technique .  Any other ways to use an O2 sensor to
tune carburetor ?

Sven

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<DIV><FONT face=3DArial size=3D2><SPAN class=3D930563823-30052002>Hi =
list.&nbsp; If=20
there is a more appropriate list for this subject, please=20
advise.</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D930563823-30052002></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D930563823-30052002>I have =
never tried=20
to interpret the output of an O2 sensor.&nbsp; In this particular case I =
am=20
looking to use a DMM to figure out if&nbsp;which carburetor circuits=20
are&nbsp;creating&nbsp;lean or excessively rich&nbsp;air/fuel=20
mixtures.&nbsp;&nbsp;The&nbsp;DMM has&nbsp;5ms resolution in "capture"=20
mode&nbsp;which records the lowest and highest values ( volts DC from =
sensor )=20
while in the mode.&nbsp; An tone is produced when a new low or high is =
recorded=20
which, if it can be heard while riding, might give some indication as to =
which=20
carburetor circuit is responsible.&nbsp; If not, I'll just retrieve low =
and high=20
value after the ride, adjust accordingly, and test =
again.</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D930563823-30052002></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D930563823-30052002>Before =
I have a=20
bunghole welded and mount the Bosch Universal O2 sensor ( part # 11027, =
single=20
wire, unheated )&nbsp;I'd appreciate peoples comments on&nbsp;the =
effectiveness=20
of this technique&nbsp;.&nbsp;&nbsp;Any other ways to use an O2 =
sensor&nbsp;to=20
tune carburetor ?</SPAN></FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D930563823-30052002>Sven</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D930563823-30052002></SPAN></FONT>&nbsp;</DIV></BODY></HTML>

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