Eric et al,
The Spitfire did not have EFI or feedback carbs, so it definitely did
NOT have an 02 sensor! It just uses the good 'ol Zenith Stromberg
carburetor with water choke. That, I suspect, is your problem. Check
to make sure your auto choke isn't sticking partially open. If it is,
it will completely screw up your mixture and it will be impossible to
lean out the carb sufficiently. The other thing to check is the
condition of the catalytic converter (or is it even there?) and see if
it is plugged up. If it has been running rich, this is a distinct
possibility. Without the converter, your emissions will read as they
did in your post. It's a soup can sized thing that's bolted just below
the exhaust manifold.
Later,
Brian
Erik Watson wrote:
>
> I have a new ( to me ) 80 Spit which is putting out too many emissions.
> The requirement for the car is 450 ppm HC and 5.0% CO at IDLE, and right
> now it is at 700 ppm HC and 8.5% CO. I have checked the plugs, wires,
> timing, etc, and have adjusted the Stromberg CD4T to what appears to be
> it's leanest setting. After pulling the piston from the carb it appears
> that the needle will not travel any further down, no matter how much I
> turn it counter clockwise ( with the special tool ). When lifting the
> piston at idle, the CO goes substantally down.
>
> Any suggestions ?
>
> thanks
> erik
--
|---------------------------------------------|
| Brian Furgalus |
| Cleveland, Ohio, USA |
| http://members.xoom.com/bfurgalus/ |
| triumph.tr7@usa.net |
|---------------------------------------------|
| Summers: 1981 TR7 DHC, the "Silver Beast" |
| Winters: 1983 Honda Civic 1500DX |
|---------------------------------------------|
|