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Thread: The Dredded Z22YH Fuel Pump

  1. #1
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    Default The Dredded Z22YH Fuel Pump

    Yes It happend to me.
    Fuel pressure problems.
    I connected my laptop the the car using an opcom OBDII reader (bought on eBay )
    Monitored the fuel pressure and sure enough the pressure droped.
    So £300 later I fitted a new pump and now working again.
    I noticed the oil seal had "blown" from it's seat leaking hydrolic fluid into the cam housing.
    I dissasembled the pump and found it servicable.
    The seal is easy to refit using a large socket as a drift.
    I need to re fill the hydrolic fluid but the original filling port is sealed with a ball bearing, so I will need to drill a new filler hole.
    For those interested I am documenting the project here.
    http://www.somethingornothing.com/z22yh_fuel_pump.htm

  2. #2
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    Vehicle : Vauxhall Astra-J

    Trim : Elite

    Engine : 2.0 CDTi

    Year : 2013

    Default

    Quote Originally Posted by 10cls View Post
    I need to re fill the hydrolic fluid but the original filling port is sealed with a ball bearing, so I will need to drill a new filler hole.
    You can knock it out according to the how2

    http://www.vectra-c.com/forum/showthread.php?t=118396

    .

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    Default Z22YH fuel pump

    I am not a full member yet and could not find any pictures.
    My fault was the main oil seal blown off.
    Thanks for the link very informative.

  4. #4
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    Default Signum 2.2 High Pressure Fuel Pump

    Good stuff 10CLS.
    If you search under `omega2498' (me) you will see that `my' thread has had 17,000 odd Hits. Perhaps you can put a link there to your interesting thread/pics. Why do you think the oil seal blew out ? High pressure petrol leakage around the swash plate pistons - thereby blowing the seal out ?
    When you say you looked at the pressure was that from the lift pump in the tank, or the injection rail pressure ex the HP pump ?

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