Failed smog. High co%. on 1990 Ford E-250

I failed my calif. smog test. The co% was too high. The tech suggested that it might be the smog pump. but that seems to be working. What else should I look at?

by in Port Hueneme, CA on October 10, 2009
1 answer
ANSWER by on October 11, 2009
get a tune-up a fuel addictive, check your air filter fuel filter
1 person likes thisFlag inappropiateReply