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Old 09-26-2020, 01:29 PM   #1
flash
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Join Date: Apr 2012
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Default 02 sensors maintenence question

run a data logger with a 02 sensor with one on each side of motor on one primary tube about 8 inches down from flange. Can you clean these 02 sensors? or just replace them. they are 6 years old but only race about 10 times a year.C15 VP race fuel only.no additives .Normally they read about 13.40 range. This is a Autometer data logger. Last race when I go on the 2step-protree one side goes to like 19.40 and the other side stays at 12.98 that run. They always run really close together until now. When it goes on the stop they equal back out the rest of the run. I can pull them out and recalibrate them in fresh air, but if I have them out can I clean them, or just buy 2 new ones and start fresh.
Checked the carb and nothing is stopped up or looks anything out of the norm. Reason to look at car slowed down 3 hundreds 1st round and lost. it slowed down incrementally one thou, and then 2 more thous to the 330 and at the 8th mile was almost four hundreds off pace. The next race it seemed okay but lost 4.7 hundreds first round again. Inquiring minds would like opinions.
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