Cavalier diesel starts fine when cold but then dies when revved

Discussion in 'General Motoring' started by Jonbon, Oct 15, 2004.

  1. Jonbon

    Jonbon Guest

    Hi guys, I wonder if anyone can help?

    Last winter, my '94 Vauxhall Cavalier 1.7TD diesel (208,000 miles!)
    started exhibiting this strange behavior: it started fine on cold
    (<4°C) mornings and would idle fine, however, as soon as I revved the
    engine to say 2500rpm (or attempted to drive off) the engine would
    suddenly splutter, loose power and then die. Starting it again after
    this was very difficult and the same problem would occur each time
    until I let it idle long enough for the temperature gauge to move
    slightly where it would then drive fine for the rest of the day. I
    never solved this problem, but found keeping it in a garage overnight
    kept it warm enough not to have this problem.

    This year, the problem is back again but at much higher temperature
    mornings (8°C), and now keeping it in the garage is no longer enough
    on many days.

    I have read many discussions on people having problems with their
    diesels starting, but no-one that has the specific problem that I
    have. Last weekend, I checked all the glow plugs, they all glowed
    within a few seconds. I measured the voltage on the bus-bar and sure
    enough it is ~12V whilst pre-heating and turns off after 8 seconds or
    so if left with ignition on only. If started, the plugs remain at
    ~12V for about 5 minutes before they turn off, so I guess that the
    glow-plug relay must be working fine? I have also tried many additive
    fuel injector cleaners and BP Ultimate to see if it helps but it

    I'm out of ideas but reluctant to throw money at this problem at the
    main dealer (although it has been regularly serviced at the agents
    until now) given it's high milage and low value. Anybody out there
    have any thoughts that might solve this?


    Jonbon, Oct 15, 2004
  2. Jonbon

    DuncanWood Guest

    Sounds like worn transfer pressure pump blades, a decent diesel specialist
    should be able to measure the TP when the engines cold to confirm this.
    DuncanWood, Oct 15, 2004
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