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Thread: Dump Valve Problem

  
  1. #1
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    clokey's Avatar
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    Dump Valve Problem

    Over the past few weeks I have noticed that my car isn't boosting properly. Where as before it would boost at 1.3 bar, its now only making 1.0bar.

    At first my thought was uh oh the turbo;s F@cked, hybrid here we come.

    Tonight I thought I would check the DV as it also makes a poor excuse of a dump No jokes please

    On idle the Dump valve is half open as you can see the spring inside surely this isnt right, is it a case of the DV is knackered and needs replacing or refurbing ie new spring.

    Help please

    FYI Its the Bailey DV26 Type D

    Thanks
    Astra Sri Turbo

    CS4 276BHP/325lbft


    LMF Vauxhall - 01858 433599

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    markja's Avatar
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    take it off mate and see what you boost up to then. you still got your spring from the standard one?
    YOUR FRIENDLY WINDSCREEN MAN

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    Still got the spring but not the vacum pipe that goes round the engine bay.
    Can anyone get a part number for this ?? Dannysport

    Will give that a go I think, Its going in for its service on Tuesday so might speak to a mate a the dealers to do it for me
    Astra Sri Turbo

    CS4 276BHP/325lbft


    LMF Vauxhall - 01858 433599

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    Replace the vacuum pipe with afew meters of the small ID samco tubing. Cheaper and easier to use !

    I assume we're talking overboost here ??? 1.3 bar is like 18psi - surely not going to hold that on the tiddly turbo for long !

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