CO Exhaust Gas Analyzer

[GBinUSA]

Looking at buying one but which one to get?. I can get either the Heathkit CI-1080 or the Gunson Digital G1425 Gastester. Both are priced about the same but the Heathkit is older technology. Does anyone have a preference based on experience?.

Also, is the analyzer totally necessary to get the Bosch CIS injection system working right?. Where I live there is no emission testing, so I can play with the mixture and have it at any setting I like. Figured I'd approach it like setting the mixture on carbs. Try and find the sweet spot - a little adjustment this way, a little adjustment that way - get it to run as smooth as I can without hunting at idle and leave it. Thoughts?.

[mrzigazaga]

Hi mate...I wouldn't say it was "necessary" to have one...It can help but TBH you can find it as you already have...If you can blip the throttle and the idle returns back within seconds then its pretty much spot on...You will hear the difference either side of the adjustment, ..Try 1/8 of a turn instead of 1/4...But if the idle is smooth and the idle returns as said then i would leave it....

[GBinUSA]

Cheers Zig, just what I was thinking.

[mrzigazaga]

I would of said Gunson but its money better spent on something else...

[phillpot]

Halfords sold some Gunson stuff off "silly cheap" little while ago..... Bargain.

[adam quantrill]

I have the Gunson green box and it has been OK for around a decade but might be wearing out, it seems less sensitive.

So I am moving over to a lambda sensor. I got one off fleabay for about 90 quid and it includes the cockpit gauge, plus it will do readings into a laptop etc over serial comms/rs232.

This will be more precise in the long run plus you can use it on the move too, a big advantage.