How to turn up 3406b


The Ppump freak
Jan 19, 2012
Just resurfaced manifold and replaced studs and gaskets. Put a bigger turbo on that is capable of 600 hp. Trucks egts are way lower when pulling a hill just want a little more fuel mabe. Just want to know what to do to the pump. Any advice would help me decide what to do thanks.
Depends on which pump you have. They're not hard, and lots of info available with a google search
What serial number?

There are two bolts on the back of the pump, kind of a ***** to get to. One is air fuel ratio, the other is rack travel. Start playing with them.