Emissions failed. Running rich

What is your question?

Car runs decent now. I had a ground go bad and it killed everything. I found the problem corrected it. New battery. On initial start up I noticed the tachometer had quit working. Went to get emissions done and it failed report says running rich on idle/ high idle Any ideas ? Cranedweller.

What makes this problem better or worse?

when it gets to operating temperature

How long has your 1993 INFINITI J30 had this problem?

just barely found out. It passed emissions with flying colors last year