Lancia Scorpion Smog Control
The Lancia Scorpion had special smog control equipment fitted to allow
it to pass the strict California emission controls.
It is quite common to find a Scorpion where the smog equipment has been
removed, and the car is therefore illegal to on the road. Ken Haven has
successfully restored a number of Scorpions and has some simple tips to
help you pass you emissions test.
- Source and install all original smog equipment, including cams and
carburettor. Check and renew all the plugs, points, condenser and
- Remove the idle cut-off solenoid plunger, check the rest of the
engine including valve clearances. The engine should idle fine.
- Check the emission - if you are still illegal then continue.
- Check compression to ensure you have not blown a head gasket.
- Clean out air injector tubes (combination of heat with torch & water
quench, and "roto rooter" made from frayed SS cable and electric drill).
- Install a new 1976 Nova air check valve.
- Check the catalytic converter, if necessary fit new universal catalytic
converter ($70 Grand Auto part, with original catalyst flanges welded
- Check the fuel tank restricter has not been removed, this can be
replaced by an aftermarket product.
By now you should have a clean engine that easily passes the emissions
test. Ken's new car passed the test with emissions less than 1/3 of limit
at both idle and 2500 RPM.