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    Re: Vauxhall Signum/Vectra C 2.2 (Z22YH) Archived Message

    Posted by Darren Bamford on January 9, 2008, 7:43 am, in reply to "Vauxhall Signum/Vectra C 2.2 (Z22YH)"

    Hi Dave

    Good post.

    This is a common problem on this engine. There is a Field Remedy No: 1614.

    I have done half a dozen or so now, it will be the high pressure pump that's faulty.

    check quicks to follow are:

    Check fuel feed pressure at high-pressure pump with
    Is primary feed pressure less than 3,4 bar ?

    Yes: Low pressure fuel feed failure - check fuse, relay, intank pump.

    No: Measure fuel pressure in the high pressure rail at idle by using Tech 2 Datalist.
    Is fuel pressure in the high pressure rail less than 600 kPa?

    Yes: High-pressure pump defect, replace.

    No: Pull off connector (two-pin) of the fuel pressure regulator.Measure the voltage of the regulator at 3000 RPM with TECH 2.Is Voltage greater than 1,2 V ?

    Yes: Fuel pressure regulator defect, replace.


    These engines also eat spark plugs and have regular misfires caused by spark plug failure.

    Never had a pressure sensor failure as yet that also goes for Diesel common rail...

    HTH

    Darren................

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