crmorrison3
New Member
- Joined
- January 21, 2009
- Messages
- 4
- Reaction score
- 0
- City, State
- Reynoldsburg, Ohio
- Year, Model & Trim Level
- '94 XLT
I am having a problem with fuel pressure loss when the Explorer is turned off. When I turn the vehicle off I lose fuel pressure and the vehicle is very hard to start. 1994 Ford Explorer XLT 4.0L 4wd.
If I turn the key to activate the fuel pump, wait until it finishes charging the line, then repeat, and then wait a little longer, it starts right away. There are no problems when driving (that I notice). When the fuel system is charged it starts like a champ every time. The fuel rail pressure tests in the normal range when the vehicle is running.
I have had the injectors replaced, replaced the fuel sending unit and pump, and replaced the fuel regulator. There are no fuel leaks (to the ground) and the engine does not burn rich, nor is there any indication that the fuel is leaking into the cyllinders as it always starts right away when I charge the system as described above, and does not blow any smoke. The oil looks just fine and there is no indication that it is leaking there. I get 16.5 mpg which is about what I got before this problem started. I don't smell any gas or have any indication that there is a problem except that it loses fuel pressure quickly when not running, and takes more than one turn of the key to charge it back up before trying to start it if it has been off for more than a few minutes.
The fuel regulator only has the one fuel port that bolts into the fuel rail, and a single vacuum port. It does not have a return line attached to it. However, there are three lines coming from the fuel sending unit to the front of the vehicle.
Is there a return line (to the fuel tank) attached to something else on the fuel rail that I can't easily see? Does anybody have any ideas?
Thanks a bunch!
Charlie
If I turn the key to activate the fuel pump, wait until it finishes charging the line, then repeat, and then wait a little longer, it starts right away. There are no problems when driving (that I notice). When the fuel system is charged it starts like a champ every time. The fuel rail pressure tests in the normal range when the vehicle is running.
I have had the injectors replaced, replaced the fuel sending unit and pump, and replaced the fuel regulator. There are no fuel leaks (to the ground) and the engine does not burn rich, nor is there any indication that the fuel is leaking into the cyllinders as it always starts right away when I charge the system as described above, and does not blow any smoke. The oil looks just fine and there is no indication that it is leaking there. I get 16.5 mpg which is about what I got before this problem started. I don't smell any gas or have any indication that there is a problem except that it loses fuel pressure quickly when not running, and takes more than one turn of the key to charge it back up before trying to start it if it has been off for more than a few minutes.
The fuel regulator only has the one fuel port that bolts into the fuel rail, and a single vacuum port. It does not have a return line attached to it. However, there are three lines coming from the fuel sending unit to the front of the vehicle.
Is there a return line (to the fuel tank) attached to something else on the fuel rail that I can't easily see? Does anybody have any ideas?
Thanks a bunch!
Charlie