[928uk] High C02 level at idle

[Paul Smith]

You don't need a classic car mechanic, just one who was working on cars in
the '80s when k-jetronic was common.
You can do it yourself, you do need a special tool (an extra long Allen
key), and you need to follow the instructions in the workshop manual
carefully.
I wouldn't rely on smell though, I weaken till it starts to hunt, then
richen until it bogs, then set it in the middle. That will get it idling
smoothly, but whether it will pass the MoT is another matter.

On 23 September 2018 at 15:35, <leaoalexandre at sapo.pt> wrote:

> Hello,
>
> Thanks! I'll look for it!
>
> In case I don't find anyone to do it - is it something that I can do by
> myself (like tuning Idle)? Do I need a special tool? Can I relly on the gas
> smell to know if I'm do it correctly?
>
> Sorry for so many questions, but I cringe when I start to think in finding
> a proper classic car mechanic.
>
> Best regards,
>
> Alex
>
> Quoting Paul Smith <smiffypr at gmail.com>:
>
> It's between the spider body and the air filter, down a deep hole. See
> page 25-4 of the workshop manual.
>
> Smiffy
>
> On 22 September 2018 at 15:58, <leaoalexandre at sapo.pt> wrote:
>
>> Hello,
>>
>> Thanks for your reply!
>>
>> OK - CO and not CO2 lol
>>
>> As to mixture adjustment, I'll have to find someone to do it, as I don't
>> have the equipment/know-how to do it!
>>
>> And where on the engine bay is the adjustment?
>>
>> Thanks for the tip on the next (hopeffuly not) problems!
>>
>> Best regards,
>> Alex
>>
>>
>> Quoting Paul Smith <smiffypr at gmail.com>:
>>
>> First, it's CO they measure not CO2.
>> On a K-jetronic car (which yours is if it is a 1983 model),the idle
>> mixture adjustment is easy.
>> Any mechanic with experience of K-jet will be able to do it, or are you
>> going to do it yourself?
>>
>> Once adjusted, you may well find that it has been adjusted rich to
>> compensate for another problem.
>>
>> Smiffy
>>
>> On 22 September 2018 at 00:09, leaoalexandre--- via 928uk <
>> 928uk at lists.928.org.uk> wrote:
>>
>>> Hello dear lister,
>>>
>>> I went to get a new MOT and my 1983 928 was diagnosed with a very high
>>> CO2 level at idle (actually, it went all the way up in the machine...)
>>>
>>> When revving the level went back to normal (but back to high on idle).
>>>
>>> The smell of burnt gasoline is very strong - I don't drive the car that
>>> much and I alwways thought the smell (being a non-cat car) was normal.
>>>
>>> Can anyone please tell me what problem (or problems) do I have, and how
>>> should I fix it?
>>>
>>> Thanks!
>>>
>>> Best regards,
>>>
>>> Alex
>>> 1983 928S
>>>
>>
>>
>>
>
>
>
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