Can anyone tell me where the "the purge line at the electric switchover valve and seal" is? I am wanting to check the fuel mixture on my 1988 300e. In the artcle http://www.landiss.com/mixture.htm he talks about unplugging the purge line. Says it black tubing with 2 white stripes. I dont see that. Any help or a picture would be great.
mmy
Thanks in advance

Jimmy