Testing AFR gauges and sensors
#1
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Testing AFR gauges and sensors
I just watched an Engine Masters segment on the Motor trend website which provided some really good info. They tested five different gauges to see how close they read. Also tested this: If you have a dead sparkplug and the cylinder pumps raw fuel into the exhaust does the AFR gauge read richer? No! Several other tests were also done. Watch the video to see the results, you will be surprised. Many other good tips also.
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SbFormula (10-21-2023)
#3
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Re: Testing AFR gauges and sensors
Engine Masters | Watch Full Episodes & More! - MotorTrend
Hopefully that gets you there.
Hopefully that gets you there.
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SbFormula (10-21-2023)
#5
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Re: Testing AFR gauges and sensors
Hmmm, gets you thinking about it at least!
The raw fuel in the exhaust not causing a rich reading is also something to remember.
O2 sensors read oxygen content only! Does not care if it is bathed in raw fuel!
Something I think people forget.
Little nuggets of good information.
#6
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Re: Testing AFR gauges and sensors
Yep, good information that is proven on the dyno. How many threads have beat on exhaust leaks being the cause of problems?
Hmmm, gets you thinking about it at least!
The raw fuel in the exhaust not causing a rich reading is also something to remember.
O2 sensors read oxygen content only! Does not care if it is bathed in raw fuel!
Something I think people forget.
Little nuggets of good information.
Hmmm, gets you thinking about it at least!
The raw fuel in the exhaust not causing a rich reading is also something to remember.
O2 sensors read oxygen content only! Does not care if it is bathed in raw fuel!
Something I think people forget.
Little nuggets of good information.
https://www.motortrend.com/how-to/ex...nsor-readings/
#7
Member
Thread Starter
Re: Testing AFR gauges and sensors
Ha! That's funny, Steve Bruhl(?) ran the dyno on both occassions!
Seems like the latest dyno testing was all from 3000 rpm and up, no idle or cruise rpm checked.
Exhaust pressure blowing out of the leak instead of sucking air in?
Guess that's the thinking behind the latest test.
The earlier test has to be correct also.
Leaks are bad at lower rpm's especially, and more so when in a lower pressure part of exhaust flow.
Seems like the latest dyno testing was all from 3000 rpm and up, no idle or cruise rpm checked.
Exhaust pressure blowing out of the leak instead of sucking air in?
Guess that's the thinking behind the latest test.
The earlier test has to be correct also.
Leaks are bad at lower rpm's especially, and more so when in a lower pressure part of exhaust flow.
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