2000 Ford Explorer no start

Tiny
JHAWK7783
  • MEMBER
  • 2000 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 121,000 MILES
Car not used for 12-15 months. Engine turns over and will run for about 5 seconds with gasoline squirted into intake manifold. Checked fuses and relays for fuel pump and PCM. Replaced fuel pump because I couldn't hear it come on ----but old one was working when connected to 12 volts. New pump runs for about 2-3 seconds with key on, engine off. Also replaced fuel filter and double checked orientation of filter.
fuel pressure at fuel rail is less than 10 psi. With fuel line disconnected, get 3-4 tbsp of fuel into a cup with starter turning engine.
?Bad fuel pressure regulator? Is this the same as fuel pressure pulsation dampener on this car? Is it
possible that fuel line is plugged with debris or sediment from sitting?

Appreciate any help. Thanks.
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Sunday, October 3rd, 2010 AT 5:17 PM

5 Replies

Tiny
RASMATAZ
  • MEMBER
Hi jhawk7783, Welcome to 2carpros and TY for the doantion

You are losing fuel pressure -check the injectors and fuel pressure regulator if its leaking

The fuel pressure should be key on engine off 30-65 psi

Its not the same thing


http://www.2carpros.com/forum/automotive_pictures/12900_fpd_2.gif



The fuel rail pulse damper located on the fuel rail reduces fuel system noise caused by the pulsing of the fuel injectors. The vacuum port located on the damper is connected to manifold vacuum to avoid fuel spillage in the event the pulse damper diaphragm were to rupture. (The pulse damper should not be confused with a fuel pressure regulator, it does not regulate fuel rail pressure.)


http://www.2carpros.com/forum/automotive_pictures/12900_fpr_4.gif



The fuel pressure regulator 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.
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Sunday, October 3rd, 2010 AT 6:21 PM
Tiny
JHAWK7783
  • MEMBER
Where exactly is the fuel pressure regulator on that engine?
I assumed that I needed to remove intake manifold, but front stud broke. I'll finish that problem tomorrow with more daylight.
Thanks for help.
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Sunday, October 3rd, 2010 AT 6:58 PM
Tiny
RASMATAZ
  • MEMBER
It will look like this on the fuel rail


http://www.2carpros.com/forum/automotive_pictures/12900_fpr1_3.jpg

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Sunday, October 3rd, 2010 AT 7:37 PM
Tiny
JHAWK7783
  • MEMBER
Could the fuel pressure regulator be part of the fuel pump assembly inside gas tank?
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Monday, October 4th, 2010 AT 11:24 AM
Tiny
RASMATAZ
  • MEMBER


http://www.2carpros.com/forum/automotive_pictures/12900_fuel_pressure_regulator_1.gif

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Monday, October 4th, 2010 AT 3:17 PM

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