Re: [doc] Erratic

[Nick Tomlinson <nickandkathryntomlinson@xxxx>]

Hi Martin, the CO content when measured by a gas analyser should always be done pre-cat (via a sample pipe) and the figures 1.0-1.3% are at the samplepipe. The Cat will reduce this to 0.0% ideal or 0.3% max (MOT limit to newcat equipped cars) so I agree with what you say.
 
I'm sure I said in the earlier e-mail that if the cat is removed then the system then measure the CO content by % volume at the exhaust.
My car has a cat and I set mine with the duty cycle of the freq valve set to 50% using the O2 sensor as the exhaust analyser! My MOT reading was 0.01%CO !!
 
Happy motoring.
 
Nick

Martin Gutkowski <webmaster@xxxx> wrote:
Hi Nick

I have both the Renault PRV manual and the Renault K-Jetronic manual. 
The latter of which states that a lambda equipped system should be tuned 
to round 1.0%. Are we talking across purposes here? You are talking 
about sampling the gas upstream of the cat, aren't you? Without a cat, 
0.3% at the exhuast pipe will be far far too lean, and should be set to 
1.0% or 1.5% if you want to lose the lambda system and gain some power.

I've set up a lot of DeLorean engines.

Martin

Nick Tomlinson wrote:

> If you adjust the mixture so that when the lambda 
>sensor is plugged in it reads 0.3%, it'll be a tough car to start on a 
>cold morning, and you'll lose a lot of power.
>Nick - Not true, you set the base system to 1.0-1.3% (as per my Bosch manual), the Lambda system will reduce this value and the cat will do the rest.I'm sure I have uploaded the Bosch K-Lambda system on this newsgroup.
>  
>



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