Eudie
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I have a 24v 5.9 Cummins 1999 with the vp44 injection pump that doesn't have the power it once did. My fuel pressure is 12 at idle speed and 10 at WOT... The engine runs fine, starts very good, and no smoking of any color. It's very slow on take off, barely gets to 2,300 RPM only on a down hill it would reach as far as 2,8000... All my fuel fuel lines and fuel filters are NEW... PLEASE HELP I'M OUT OF TRICKS...???