lincoln did not pass emissions test, what could be the cause?

check your cat and also your O2 sensor, if this not helpfull go to the mother of all lincoln web sites.
http://www.markviii.org/LOD2/index.htm
if LINCOLNS OF DISTINTION don't now forget about it.

thanks for your reply.

your very welcome.:dogpile: :dogpile: :dogpile: :dogpile: