On my Techstream as a Toyota mechanic, when connected to the ECU, I can command the fuel ratio lean or rich in fine increments. It's used for diagnostic purposes to see if when you command more or less fuel, do the A/F and O2 sensors respond correctly. Helps troubleshooting a lot.
@@dynaway You can see your efficiency indicators are showing an internal combustion issue. CO2 is 5% below and 02 is 5% high, the root cause seems to be a lean condition. Lambda is 1.22 meaning lean and C02 & O2 are verifying that.
![5-GAS EXHAUST EMISSION ANALYSIS [SIMPLE]](http://i.ytimg.com/vi/ah1SkGGQxvc/mqdefault.jpg)
So easy to understand when so clearly explained 👌 many thanks 👏
Where has this been all my life! Best explanation ever 👍
Very good video! The explanations are easy to understand.
Videos like this raise good mechanics
Great video!
The information is very instructive and is very well explained, I would like to see more videos like these. Thanks
Happy Christmas 🎄 Russell krick
Thanks 👍
From Nick Ayivor from London England UK 🇬🇧
great explanation
Such clarity. Please may we have some more
How do you change the richness of the mixture?
On my Techstream as a Toyota mechanic, when connected to the ECU, I can command the fuel ratio lean or rich in fine increments. It's used for diagnostic purposes to see if when you command more or less fuel, do the A/F and O2 sensors respond correctly. Helps troubleshooting a lot.
"clean" shop air? wouldn't it be better in some shops to zero the tool outside?
I was wondering the same
can you assist to analyze this result that i have on my car?
HC - 9
CO - 0.01%
CO2 - 10.46%
O2 - 5.79%
NOx - 0
Lamda - 1.22
Basically no experience here but was it slight lean due to a fuel delivery issue/manifold vacuum leak. Looks similar to the lean issue at 16 minutes
This video may also help
ua-cam.com/video/4st6Hf5-nJ4/v-deo.html
Are you experiencing a drivability concern as well or just these emission readings?
@@ASEMasterTech909 just emission reading car is running fine.
@@dynaway You can see your efficiency indicators are showing an internal combustion issue. CO2 is 5% below and 02 is 5% high, the root cause seems to be a lean condition. Lambda is 1.22 meaning lean and C02 & O2 are verifying that.