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Thread: V6 Vectra clattery engine

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    confused V6 Vectra clattery engine

    Hi Guys.

    My 42000 mile v6 is very clattery under load from cold to about the 5 mile stage then it sounds like a normal diesel.Otherwise it performs normally. Is this normal or have I an EGR on the way out? Anybody else out there with a CDTi v6 who can comment? Much appreciated.

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    Regular Member m8internet's Avatar
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    42000 miles in 8 years is quite low
    Could you possibly break down the mileage by year, or the services

    If the EGR is on the way out you more likely to see lots of black smoke on accelerating

    More likely the engine is suffering low mileage syndrome
    Without examining the car, clutching at straws...

    The Cat may be partially blocked or near the end of its life
    The glowplugs may be at the end of their life
    One or more injectors may be dirty

    It is also possible the valve clearances require checking
    Normally this is done at 10 years / 100K miles / cambelt change
    If the cambelt has never been done, then it might be worth considering having the valve clearances checked

    The V-belt is also due at 8 years / 80K miles
    Again, if this has not been done, worth considering

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    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

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    If it is clattery only when cold, check the oil that was put in last, might have had the wrong stuff slipped in. The 1.9CDTI is always like that when cold and needs a very thin oil.

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    Hi. Thanks for your reply guys.The car is actually on a 58 plate and has been regularly serviced. Bought as a network Q car this month so has possibly been serviced as part of the deal? Not sure yet of the servicing intervals but pressing the tripmeter knob shows that it ought not need a service for 16000 more miles. Seems to be over fuelling as it does about 12 to the gallon with a light foot whilst warming up?

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    Regular Member m8internet's Avatar
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    Your profile shows a 2003 DTI, perhaps you want to update that?

    A 2008 should have two services
    Do you not have the service book and/or previous receipts?
    If the car is under Network Q cover, when does it expire?
    Equally, under Network Q cover, book it in for ANYTHING you are unhappy about; the report is then logged and you can refer back to that visit if it continues

    Servicing is NOT included as part of a Network Q purchase, unless you request
    However, most dealerships will service a car when arriving into their stock if it was overdue, or mark it on the sales document (To be serviced prior to release to customer)
    If there was no service book, this would have been a great bargaining chip on the sale for you...

    Quote Originally Posted by barbelman View Post
    Seems to be over fuelling as it does about 12 to the gallon with a light foot whilst warming up?
    There is no real way to tell if the engine is overfuelling when cold, as it will be using about 20% more fuel
    Set the Driver Info Centre to instant reading
    It should be between 0.2 and 0.6 gallons per hour

    The instant reading during normal driving is pointless, it's more fun than anything
    Set the average and know when it was last reset
    If you need to reset it, then do it whilst moving!
    Monitor it every 10K miles
    Mine starts off at about 26mpg, very quickly rises over the next few days, settles out at 32.3mpg
    It is still rising and now sitting at 34.0mpg
    Last edited by m8internet; 19th March 2011 at 08:42.

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    Regular Member Derek Mc's Avatar
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    Quote Originally Posted by barbelman View Post
    Hi. Thanks for your reply guys.The car is actually on a 58 plate and has been regularly serviced. Bought as a network Q car this month so has possibly been serviced as part of the deal? Not sure yet of the servicing intervals but pressing the tripmeter knob shows that it ought not need a service for 16000 more miles. Seems to be over fuelling as it does about 12 to the gallon with a light foot whilst warming up?

    Has all the hallmarks of incorrect oil it is too thick when cold I suspect it has been changed for 5w-40 semi synth personally

    Try an experiment if you dare, drop this change the filter and add new fully synth 0W-30 and a filter and listen to the peace and harmony under the bonnet!

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    Regular Member Mick B's Avatar
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    Mine has 5w-30 fully synth and it runs as it should.Vauxhall were caught putting in 10w-40 semi during a service and were asked to remove it.The car had a different sound as it was the wrong oil.Vauxhall said at the time 10w-40 goes in all our engines.So why does the manual say 5w-30 ? I would try the oil first off as suggested above.

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    Regular Member m8internet's Avatar
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    Quote Originally Posted by Mick B View Post
    Mine has 5w-30 fully synth and it runs as it should.Vauxhall were caught putting in 10w-40 semi during a service and were asked to remove it.The car had a different sound as it was the wrong oil.Vauxhall said at the time 10w-40 goes in all our engines.So why does the manual say 5w-30 ?
    Are you confusing VX and dealership?

    I too caught my dealership using the wrong oil, but didn't notice any noise
    It was when I asked to see the paperwork and noticed
    I then referred it back to Sureguard (Vauxhall Warranty) and asked what oil they had paid for, to which they advised the GM-LL specification
    I then suggested they contact the dealership to confirm what they had paid for and what had been used
    I was then advised to return and a further oil and filter change would be completed
    The details were then added to my service record, and ever since it comes up "Use only 5W30 Long Life Oil"

    I also sent a request to VX asking what oil dealerships should be using in this car
    Again, that also confirmed that 5W30 GM-LL specification should be used
    If any other oil was used it may invalidate the warranty (the only way they would know is by obtaining and printing the services)

    Mine is a little noisey now, compared to new, but that is more due to the age and mileage

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    Regular Member Mick B's Avatar
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    Quote Originally Posted by m8internet View Post
    Are you confusing VX and dealership?

    I too caught my dealership using the wrong oil, but didn't notice any noise
    It was when I asked to see the paperwork and noticed
    I then referred it back to Sureguard (Vauxhall Warranty) and asked what oil they had paid for, to which they advised the GM-LL specification
    I then suggested they contact the dealership to confirm what they had paid for and what had been used
    I was then advised to return and a further oil and filter change would be completed
    The details were then added to my service record, and ever since it comes up "Use only 5W30 Long Life Oil"

    I also sent a request to VX asking what oil dealerships should be using in this car
    Again, that also confirmed that 5W30 GM-LL specification should be used
    If any other oil was used it may invalidate the warranty (the only way they would know is by obtaining and printing the services)

    Mine is a little noisey now, compared to new, but that is more due to the age and mileage

    Yeah sorry it was the dealership.The car was slightly noisier after its service and when the paperwork was checked it stated 10w-40.When returned they agreed to change it but said it was a waste of money as it didnt need fully synthetic.

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    Regular Member m8internet's Avatar
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    Quote Originally Posted by Mick B View Post
    dealership said it was a waste of money as it didnt need fully synthetic
    Yes, they are correct, but also wrong if the car is still under OE warranty

    Once the car is out of warranty you can use any oil, as outlined in the handbook and service book
    You can easily swap to 10W40 semi-synthetic oil
    You shouldn't be able to notice any difference, unless the car is on ECOFlex servicing
    I noticed this on one of my first services, where 10W40 oil had been used in error, as the interval dropped suddenly from 10K miles onwards, but with 5W30 oil there is no such dramatic drop

    When using 10W40 oil you simply reduce the oil change interval to 10K miles, but it will last to 20K miles

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