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Fuel System Pressure Release: Navajo

  1. Disconnect negative battery cable. Remove snow/ice shield. Remove air intake tube between air cleaner and throttle body. Remove fuel filler cap to release fuel tank pressure. Connect Fuel Pressure Gauge (49UN01010) to relief valve (Schrader valve) on fuel supply manifold, near fuel pressure regulator. See Figure .
  2. As an alternate method, disconnect inertia switch connector, behind instrument panel, under radio. Start and operate engine until it stalls.
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