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Adjusting Hs4 With Gunson Co Sensor


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#1 ksj

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Posted 06 August 2020 - 04:18 PM

Has anyone set their carb using a Gunson Gastester? If so, what CO percent did you set as a goal?
Thanks,

Joe

1979 Mini 1000



#2 richmondclassicsnorthwales

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Posted 06 August 2020 - 05:59 PM

Hi Joe

 

Have a look at this for guidance

 

https://assets.publi...9th-edition.pdf

 

This is what is required.

 

I used one of the very early Gunson gas meters back in about 1985, they have progressed a little more by now, they are easy to use though



#3 cal844

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Posted 06 August 2020 - 07:09 PM

4.5%CO and 1200ppm hydrocarbon

Set your engine to 3.0% CO so you have some wiggle room.

Edited by cal844, 06 August 2020 - 07:10 PM.





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