ISUZU Amigo/Pick-ups/Rodeo/Trooper 1981-1996

Electric Fuel Pump

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TESTING



See Figure 1



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Fig. Fig. 1: A fuel pressure gauge can be a valuable diagnostic tool

  1. Relieve the fuel pressure.
  2.  
  3. Disconnect the fuel line near the engine and install a fuel pressure gauge T-connector in the line.
  4.  
  5. Connect the fuel pressure gauge to the T-connector.
  6.  
  7. Start the engine and check the fuel pressure; it should be 9-13 psi (62-90 kPa) at the fuel pressure line after the fuel filter.
  8.  

REMOVAL & INSTALLATION




CAUTION
Fuel is under high pressure. If the following steps are not followed, fuel could spray out and result in a fire hazard or possible injury.

The fuel pump is mounted inside the fuel tank.

  1. Relieve the fuel pressure, then disconnect the negative battery cable.
  2.  
  3. Raise and support the vehicle safely. Drain the fuel tank. Remove the undercover screws and undercover, if so equipped.
  4.  
  5. Remove all gas line hose connections and the fuel pump ground wire.
  6.  
  7. Remove the filler neck hose and clamp.
  8.  
  9. Remove the breather hose and clamp.
  10.  
  11. Disconnect the fuel tank hose to evaporator pipe. Place a suitable floor jack with a piece of wood on it under the fuel tank.
  12.  
  13. Remove the fuel tank mounting bolts and lower the tank from the vehicle. At this point remove hose from pump to fuel filter.
  14.  
  15. Remove the fuel pump bracket plate and fuel pump as an assembly.
  16.  
  17. Remove the pump bracket, rubber cushion and fuel pump filter.
  18.  

To install:
  1. Install the pump to the bracket and rubber cushion. Install the fuel pump filter.
  2.  
  3. Install the fuel pump bracket plate and fuel pump as an assembly.
  4.  
  5. Raise the tank and connect the hoses. Fasten the tank straps.
  6.  
  7. Connect the fuel tank hose to the evaporator pipe.
  8.  
  9. Install the breather hose and clamp.
  10.  
  11. Connect the fuel pump ground wire. Install the undercover and screws.
  12.  
  13. Lower the vehicle safely. Refill the fuel tank and check for leaks.
  14.  
  15. Connect the negative battery cable, then start the engine and check operation.
  16.  

 
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