466E driving me crazy

111-no active codes
325- Power reduced to match cooling performance (basically an overheat code)
142-vehicle speed sensor circuit fault.
None of these are pointing to your current problem.

 

Should be 45 psi or better. Most problems do not show up until you are under 20 psi. You would need to road test it under load to see what the pressure is dropping to. If you have the spin on filter type, there should be tire valve type test port at the side of the filter base for pressure checks. There is another larger one that is the "compucheck" type that faces forward on the filter housing, I can't remember if that is pressure after the filter, or inlet restriction. For fuel pressure problems you are looking at aerated fuel, to test for this, you need a clear section of fuel tubing at the inlet to filter housing and simply check for air bubbles. Then you are looking at fuel inlet restriction, this is normally also measured the fuel filter base inlet. Nothing more than 6"Hg, (Mercury). You would need at "T" fitting and a restriction gauge. Then most importantly is fuel pressure. Also make sure the fuel is of good quality and proper grade with no cross contamination with something else.

 

read this; http://www.thetruckersreport.com/tr...8327-466e-driving-me-crazy-2.html#post4181423