Yamaha Sx250txrz Rodbolt

[ARCHSEA BUNKER]

Re O2 Sensor Test, How Difficult Is It And What Am I Looking Forthank You

 

[cousinabe]

Re: Yamaha Sx250txrz Rodbolt

you can buy an O2 test harness or use some small paper clips to tap into the O2 wiring harness to get DVM readings.

http://www.boatsetup.com/O2sensor.pdf
Disregard the Sensor Retesting /Bench testing procedures as they are useless.

 

[rodbolt]

Re: Yamaha Sx250txrz Rodbolt

with the boat in the water and fully warmed up your looking to see the meter scale between about .45-.7 V.
the readings should constantly change.
running about 3500 RPM,hull unrestrained, you should scale between about .35 and .7 V.
below .35 its lean and above .7 its rich.
no codes for failure or contaminated O2 sensor.
if its dissconnected fuel is fixed rich at low speed and lean above 4000.
DO NOT run above 4000 with a bad or dissconected O2 sensor.

 

[ARCHSEA BUNKER]

Re: Yamaha Sx250txrz Rodbolt

thank you