Posted 11/18/2008 19:26 (#510129 - in reply to #510087) Subject: RE: 3406B Cat Truck Engine
United States
not sure about the fuel pressure, as i don't have a gauge on mine, but that seams like a pretty good drop. boost is low compaired to what i run, mine will run 22 to 25 psi with my foot in it. would check fuel and air filters first, easy to change and make a big difference. when my fuel filters get older, i can tell on the boost gauge, as i won't get full boost.