1989 300E (gasoline) failed the emissions test:
At idle HC is 243 PPM (limit 220 PPM).
At 2500 RPM the HC is 57 PPM (limit 220 PPM)
Any suggestions? Cold Start valve???
The car/engine has about 180,000 miles. It came from California, so it has
the CA emissions system. I am trying to get it to pass the Pennsylvania