bank 1&2 too lean

Fuel system for bank 1 and 2 too lean. Anyone have any ideas?
Anyone had same prob.?

Intake manifold air leak. Please look up TSB 03-16-1. It will walk you through the steps on reparing this yourself. Ford Dealer will want WAY too much to do this repair and a DIYer can easily perform this.

Intake manifold air leak. Please look up TSB 03-16-1. It will walk you through the steps on reparing this yourself. Ford Dealer will want WAY too much to do this repair and a DIYer can easily perform this.
I can easily make the repair.What I am not that great at is diagnosing the prob. You are certain it is the lower intake gaskets? Where do I look up tsb 03-16-1 and what is it?

This forum has about 1 million threads on this very issue.

Search under the following:
-TSB 03-16-1
-171/174
-Isolator bolts
-Ports seals

These threads will help you decide if you have the problem that the tsb refers and how to perfomr the repair.

Happy reading