Don-
There is an excellent article in the current issue of Moss Motors quarterly
magazine.
Does your car have an airpump fitted? This seems to be a key point in the
performance of the car during pollution tests.
Regards,
Chris Delling
At 08:53 PM 9/4/97 -0600, Don McRae wrote:
>I am trying to get my 76 MGB passed Colorado Emissions. When I took it in
>it passed eveything but CO at idle
>specs as follows:
>
> Idle 2500 Limit Result
>HC PPM 190 26 600 PASS
>CO% 4.95 1.48 3.50 Fail
>CO2% 9.0 13.3
>RPM 985 2700
>
>I have since adjusted the carbs leaner and increased the gap on the plugs.
>I have read that increasing the valve clearance will allow you to lean out
>the carbs further. It has been fitted with SU HIF's. Does anyone have any
>further advice for me. I should note that I have a slight exaust leak which
>will be remidied this weekend and that at approx 900 rpm it tends to run a
>little rough. The timing is set to 10 degrees BTDC, the points are new as
>are the plugs. Should I adjust the timing and if so which way. Any
>suggestions, advice would be greatly appreciated. I have 10 days to retest
>before I have to pay again.
>
>Thanks in advance...
>
>Don McRae
>
>
>
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