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Home >> Mazda >> 1996 >> B3000 Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System >> Fuel System Pressure Release >> B4000
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Fuel System Pressure Release: B4000

  1. Disconnect negative battery cable. If necessary, remove snow/ice shield. Remove air intake tube between air cleaner and throttle body. On all models, remove fuel filler cap to release fuel tank pressure. Connect Fuel Pressure Gauge (49-UN01-010) to fuel pressure relief valve (Schrader valve) on fuel supply manifold, near fuel pressure regulator. See Figure .
  2. As an alternate method, disconnect inertia switch connector behind right side of instrument panel, under radio. Start engine and operate until it stalls.
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