2004 Ford Explorer fuel pump and fuel filter changed

2004 FORD EXPLORER
51,000 MILES • V8 • 4WD • AUTOMATIC
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PONCHO3577
  • MEMBER
  • 1 POST
Recently changed the fuel filter and fuel pump. Truck starts after several tries and rocks at times then shuts off. What can be done next? Trouble Shoot?
Nov 23, 2008 at 6:08 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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DAVE H
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 13,384 POSTS
check fuel pressure and fuel pressure regulater


https://images.2carpros.com/forum/automotive_pictures/266999_fuel_2.jpg

Fuel Pressure Regulator The fuel pressure regulator (Fig. 79 ) is attached to the fuel rail downstream of the fuel injectors. It regulates fuel pressure supplied to the fuel injectors. The regulator is a diaphragm-operated relief valve. One side of the diaphragm senses fuel pressure and the other side is connected to the intake manifold vacuum. Fuel pressure is established by a spring preload applied to the diaphragm. Balancing one side of the diaphragm with manifold vacuum maintains a constant fuel pressure drop across the fuel injectors. Fuel pressure is high when engine vacuum is low. Excess fuel is bypassed through the fuel pressure regulator and returned through the fuel return line to the fuel tank. Fig. 79: Identifying Fuel Pressure Regulator Courtesy of FORD MOTOR CO.
Nov 23, 2008 at 6:32 PM
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