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high fuel pressure

  1. Alfa 159, Brera & 946 Spider
    Car: Brera 2.2JTS Check engine light is on with P1670 code, rough idle when warm, could randomly go worse and stall. Giving gas sometimes make it calmer for a bit. The fuel rail pressure fluctuates fast between 2400-3600Kpa. My local mechanic suspected the high fuel pressure regulator and...
  2. Alfa 147, 156 & GT
    my 156 jtd keeps stalling with reving around the 3-4000 rev mark.. i took it to my local mechanic for a diagnostic check, and im told the fault is showing as fuel pressure too high. im told this could mean a new fuel pump as he tried changing the fuel filter and checking the fuel lines to no...
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