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1998 BMW 528I
2.8L I6 M52•RWD•AUTOMATIC•gas
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Repairs0Labor497Torque3173Fluid8DTC1210Battery1Maintenance0Recalls0
P0087high severityPowertrain

Fuel Rail/System Pressure - Too Low

on 1998 BMW 528i 2.8L I6 M52 · RWD

What this code means

The fuel rail pressure is lower than the PCM commanded value. Common in direct injection and diesel systems.

Symptoms

  • Check Engine Light
  • Loss of power
  • Engine stalling
  • Long crank times
  • Rough idle

Common causes

  • Weak fuel pump
  • Clogged fuel filter
  • Fuel pressure regulator failure
  • Fuel line leak
  • Faulty high-pressure fuel pump

Diagnostic steps

  1. Check fuel pressure with gauge
  2. Inspect fuel filter
  3. Test fuel pump volume
  4. Check for fuel leaks
  5. Test fuel pressure regulator

Repair notes

Replace fuel pump, filter, or pressure regulator as needed.

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