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09 Corsa CDTI 1.3 intermittent non start

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  • [Corsa D] 09 Corsa CDTI 1.3 intermittent non start

    Hi, I bought a 09 Corsa 1.3 CDTI (Z13 DJT engine, 45k miles on the clock) just under two months ago and I’ve been having problems starting the car, that has gotten a lot worse over time.

    It used to be 1/5 times it would struggle to start, now it’s almost always (now not drivable). After I start the car (and the problem arises), it idles rough, sometimes stalling (low bouncing revs, although a new fuel pressure sensor I fitted seems to have ‘mostly’ fixed this) and there’s little to no response from the accelerator. This used to continue for around 5-10 minutes, with the accelerator/revs gradually becoming more responsive. From 10x to 20x revs it would climb like normal, then once it gets to around 25x it’s climb becomes slow all the way to redlining, as if something is blocked almost. I also see a lot of white fumes from the exhaust when reving in this bad state.

    Eventually after enough reving, the car would eventually ‘snap’ into a normal state, mid rev at around 35x, and become perfectly drivable. Once the car ‘snaps’ into action, zero issues. However last night it took 45 minutes to achieve this normal state. Something to mention, the car is not safe to drive in this state, it jolts as you drive and is extremely easy to stall, like the engine lacks the power to efficiently move the vehicle.

    no warning lights appear, garage ran it through diagnostics, with no result.
    Here’s a list of what we’ve checked/done;
    • garage says it has a new fuel filter on it
    • new glow plugs
    • new fuel pressure sensor
    • disconnected MAF sensor and tried start up
    • new battery
    • put a full bottle of injector cleaner in the tank about 2 weeks ago, ran around for 20 miles
    • Checked left and right drainage holes for clogging, found them to be clean (reducing potential ECU water log damage)
    I’m at a loss, and the car is starting to cause me real stress. When I first got the car I suspected I had filled it with dirty diesel from a petrol station in the middle of nowhere, as it was the day after filling from this station it first happened. But it may have had this issue when the dealer had it, as it was 6 days after I bought it the bad starting happened.

    It may be the fuel pump is bad, or the ECU is damaged, or the throttle body valve is sticking (if this car has one, because I cannot find it), compression ratio in combustion chamber is off... the symptoms are so wide ranging it could be anything.

    Any other ideas are more than welcome, because I don’t have a scooby doo...

  • #2
    Welcome to the Forum.

    At this time of year, visible white smoke from a cold engine is quite normal, its caused by condensation inside the engine and in the exhaust system.
    People tend to jump to the conclusion that white smoke indicates a failed cylinder head gasket, but without other symptoms, such as loss of coolant, it is often not the case.

    I'm not sure what you mean when you say that, " The compression ratio in the combustion chamber is off."

    Is the garage that you refer to, the place that you bought the car from? If so, it might pay to seek the advice of a trusted, impartial garage, maybe asking people near you for recommendations. If you can find a local Vauxhall SPECIALIST (not a main dealer) they are knowledgable on that make and have the necessary equipment to deal efficiently with repairs - and they charge much less than main dealers.

    From what you are telling us, it sounds as if the problem may be too complex to guess at a remedy, particularly as you have been told that there are no fault codes. (Some problems do not throw up a fault code, but from what you list there, I would expect to find a code in there.)

    Regards

    Comment


    • #3
      Originally posted by walksall View Post
      Welcome to the Forum.

      At this time of year, visible white smoke from a cold engine is quite normal, its caused by condensation inside the engine and in the exhaust system.
      People tend to jump to the conclusion that white smoke indicates a failed cylinder head gasket, but without other symptoms, such as loss of coolant, it is often not the case.

      I'm not sure what you mean when you say that, " The compression ratio in the combustion chamber is off."

      Is the garage that you refer to, the place that you bought the car from? If so, it might pay to seek the advice of a trusted, impartial garage, maybe asking people near you for recommendations. If you can find a local Vauxhall SPECIALIST (not a main dealer) they are knowledgable on that make and have the necessary equipment to deal efficiently with repairs - and they charge much less than main dealers.

      From what you are telling us, it sounds as if the problem may be too complex to guess at a remedy, particularly as you have been told that there are no fault codes. (Some problems do not throw up a fault code, but from what you list there, I would expect to find a code in there.)

      Regards
      Thanks for the reply, found the problem.

      my dad rapped the EGR valve with a hammer as I reved the engine, with every tap the rev got stronger until the car burst into life. We turned the engine on and off a few times to recreate the slow climbing revs/non responsive accelerator, and again as I tried to rev we tapped the valve repeatedly with a hammer, and again the car burst into life.

      problem solved, a stuck EGR. It’s now in the hands of a mechanic who can whip it out and repair/replace. Free of charge too.

      Comment


      • #4
        Well done - Never underestimate the power of a hammer

        Regards

        Comment

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