GM Celebrity/Century/Ciera/6000 1982-1996 Repair Guide

Relieving Fuel System Pressure

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CAUTION
Before opening any part of the fuel system, the pressure must be relieved. Follow the procedure below to relieve the pressure:

The fuel pressure release fitting is located at the top rear of the fuel injection rail. Use of a fuel pressure gauge, J-34730-1 or an equivalent.

  1. Disconnect the negative battery cable to avoid possible fuel discharge.
  2.  
  3. Loosen the fuel filler cap to relieve the pressure.
  4.  
  5. Connect a fuel pressure gauge to the pressure valve, wrap a towel around the fitting while connecting a gauge to avoid spillage.
  6.  
  7. Install a bleed hose into an approved unbreakable container, then open the valve to bleed the pressure.
  8.  
  9. Drain any excess fuel in the gauge into the container.
  10.  

 
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