Acura Coupes and Sedans 1994-2000 Repair Information

Fuel Pressure Regulator

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REMOVAL & INSTALLATION



The fuel pressure regulator keeps a constant fuel pressure to the fuel injectors. When the manifold pressure and fuel pressure vary more than 43 psi (294 kPa) the diaphragm is pushed upward causing the excess fuel to be fed back into the fuel tank through a return line.


CAUTION
Observe all applicable safety precautions when working around fuel. Whenever servicing the fuel system, always work in a well ventilated area. Do not allow fuel spray or vapors to come in contact with a spark or open flame. Keep a dry chemical fire extinguisher near the work area. Always keep fuel in a container specifically designed for fuel storage; also, always properly seal fuel containers to avoid the possibility of fire or explosion. See Figure 1



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Fig. Fig. 1: Cross-sectional views of the fuel pressure regulator in both the open and closed positions

  1. Properly relieve the fuel system pressure.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Detach the vacuum hose from the fuel pressure regulator.
  6.  
  7. Unfasten the two fuel pressure regulator retaining bolts.
  8.  
  9. Remove the fuel pressure regulator and the O-rings. Discard the O-rings.
  10.  

To install:
  1. Lubricate the new O-rings with a light engine oil.
  2.  
  3. Position a new O-rings onto the fuel pressure regulator.
  4.  
  5. Place the fuel pressure regulator into position and install the retainers.
  6.  
  7. Attach the vacuum line to the fuel pressure regulator.
  8.  
  9. Connect the negative battery cable.
  10.  
  11. Run the engine at idle for 2 minutes, then turn the engine OFF and check for fuel leaks and proper operation.
  12.  

 
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