Question about Dodge Dakota
sure you are with the tank half full, could be an error in the signal
indicator of fuel, which would indicate a half tank when it might be
less (or empty), with the option that the air entering system.
Fig. : Common components of the Dakota fuel tank system
Fig. : Fuel pump module lines when removing the tank
Keep in mind this information about the fuel injection system, so this is under a constant pressure. Before servicing any part of the fuel injection system, the system pressure must be released. Use a clean shop towel to catch any fuel spray and take precautions to avoid the risk of fire.
The MFI system uses an electric fuel pump mounted in the fuel tank. The fuel pump used in this system is a positive displacement, roller vane immersible pump with a permanent magnet electric motor.
For 1993-96 5.9L and 1994-96 3.9L/5.2L/8.0L models, as well as 1996 2.5L models with the "returnless'' fuel injection system, the fuel pump is referred to as the "fuel pump module''. For the returnless system, the fuel is drawn in through an opening tube in the bottom of a filter/regulator. The regulator portion is calibrated to maintain a fuel pressure of approximately 35-45 psi (241-310 kPa). The internal fuel filter is built into the assembly. The filter/regulator contains a diaphragm, calibrated springs and a fuel return valve. An internal check valve maintains some fuel pressure when the engine is not running to enable a satisfactory start-up. The internal diaphragm routes fuel in excess of 45 psi (310 kPa) back to the fuel tank. With this system, proper fuel pressure is controlled at the source, so there is no need for a separate return line from the engine to the tank as found in conventional fuel systems.
I suggest test following the next procedure... the fuel system test port is located on the fuel rail in the engine bay.
Fig. 1: Fuel pressure test port199296 3.9L engine
Fig. 2: Fuel pressure test port199296 5.2L engine
Fig. 3: A common fuel pressure test using a screw-ingauge rated to at least 60 psi (414 kPa)
1993-96 5.9L, 1994-96 3.9L/5.2L/8.0L and 1996 2.5L Models
see Figures 1, 2 and 3 (above)
With the engine at idle, the system fuel pressure should be within 35-45 psi (241-310 kPa).
Hope help with this.
Posted on May 08, 2010
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Posted on Jan 02, 2017
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