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Thread: Please help timing chain possibly jumped

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  1. Please help timing chain possibly jumped 
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    Was driving fine the night before. The next morning the car sounds like a tractor and there's no revs!!

    Audi q7 3.0 tdi engine problem? Timing chain jump? Failed tensioner? - YouTube

    Got an audi tech to check errors but none at all. I have come to the conclusion there is a mechanical fault. Possibly timing chain has jumped a teeth or 2

    Has this ever happened to anyone else? There's also loads of white smoke coming from the exhaust which smells of unburnt fuel.

    Please check YouTube vid for the noise it's making and also shaking quite violently.

    Only revs a little when warmed up 90'c and also hesitates when put in gear (500-600 rpm)

    Can anyone shed some light please
     
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  2. Re: Please help timing chain possibly jumped 
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    You need to get the car scanned for faults. Yes white smoke is unburnt fuel. Did the car get re-fuelled the night before? Correct fuel? Water in fuel? It will sound like a bag of hammers if it has a fuelling fault.
    Alan.

    A6 Avant (C7) 3.0 TFSI Quattro S-Tronic
    APR St1 Custom Exhaust - now gone
    VW T6 150 DSG Camper £££
     
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  3. Re: Please help timing chain possibly jumped 
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    There are huge numbers of VAG cars with this engine hitting scrap yards, they suffer catastrophic cam chain failure damage where the repairs can be double the cars retail forecourt value. If the long life oil change intervals had never been introduced, this would be a very minor issue. It isn’t the engine, it is the useless oil asked to perform miracles....
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
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  4. Re: Please help timing chain possibly jumped 
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    No error messages at all. Even got an audi tech to scan with his machine.

    Drove over 100 miles before getting home so fuel shouldn't be the issue.

    Some say egr blocked? Faulty maf?
     
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  5. Re: Please help timing chain possibly jumped 
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    Such a shame that they only make cars last for minimum time in order for you to reach out and by the next model in line when released
     
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  6. Re: Please help timing chain possibly jumped 
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    Quote Originally Posted by 786sam View Post
    Such a shame that they only make cars last for minimum time in order for you to reach out and by the next model in line when released
    I think it is because most people treat cars like kitchen appliances and that includes fleet buyers. Then manufacturers turn around and enable this attitude by making stupid service intervals and on top of that, emissions policy means that the protective elements in engine oil have been removed because the low friction (reduced Co2) engines burn oil and sensitive emissions systems don’t like things like Zinc which is an excellent wear additive in its ZDDP form. So it means these clean cars get binned before their time so generating more pollution than using it for 20 years or more as the most pollution comes from when a car is made, not used.

    The next nightmare is coming in around 20 years when we will be stuck with billions of kilo’s of Lithium Ion batteries and we start finding them fly tipped.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
    !


     
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