Smok while downhill with engine brake

R

Ralph A. Schmid, DK5RAS

Guest

• Dec 5, 2004

• #1

Hi,

everyone seems to talk about clouds of smoke today, so I will add one
to this

When driving down a hill with the engine supporting the brakes, our
Defender 90 starts to exhaust smoke. Engine is a 2.5 td. Normal
behaviour, or do we have to worry? Everything else is normal, no
coolant loss, no oil loss, no smoke during normal travel. Just when
cranking the engine it also smokes, but this really seems normal to me
with this kind of engine Five seconds after the engine has fired up
there is no smoke at all...



regards - Ralph

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J

JD

Guest

• Dec 5, 2004

• #2

Ralph A. Schmid, DK5RAS wrote:

> Hi,
>
> everyone seems to talk about clouds of smoke today, so I will add one
> to this
>
> When driving down a hill with the engine supporting the brakes, our
> Defender 90 starts to exhaust smoke. Engine is a 2.5 td. Normal
> behaviour, or do we have to worry? Everything else is normal, no
> coolant loss, no oil loss, no smoke during normal travel. Just when
> cranking the engine it also smokes, but this really seems normal to me
> with this kind of engine Five seconds after the engine has fired up
> there is no smoke at all...
>
>
>
> regards - Ralph
>
In a petrol engine this indicates worn seals on the intake valve guides,
sucking oil down the guides when there is a high vacuum in the manifold -
but a turbo diesel never has a vacuum in the manifold. Could be the turbo
leaking oil into the exhaust when there is low exhaust pressure but high
rpm hence high oil pressure.
JD

 

N

Nige

Guest

• Dec 5, 2004

• #3

Ralph A. Schmid, DK5RAS wrote:
> Hi,
>
> everyone seems to talk about clouds of smoke today, so I will add one
> to this
>
> When driving down a hill with the engine supporting the brakes, our
> Defender 90 starts to exhaust smoke. Engine is a 2.5 td. Normal
> behaviour, or do we have to worry? Everything else is normal, no
> coolant loss, no oil loss, no smoke during normal travel. Just when
> cranking the engine it also smokes, but this really seems normal to me
> with this kind of engine Five seconds after the engine has fired up
> there is no smoke at all...
>
>
>
> regards - Ralph

Duff turbo mate.

--
Subaru WRX (The Bitch)

Range Rover Classic (Monty)

__

 

L

Lee_D

Guest

• Dec 5, 2004

• #4

"Ralph A. Schmid, DK5RAS" <[email protected]> wrote in message
news:[email protected]...
> Hi,
>
> everyone seems to talk about clouds of smoke today, so I will add one
> to this
>
> When driving down a hill with the engine supporting the brakes, our
> Defender 90 starts to exhaust smoke. Engine is a 2.5 td. Normal
> behaviour, or do we have to worry? Everything else is normal, no
> coolant loss, no oil loss, no smoke during normal travel. Just when
> cranking the engine it also smokes, but this really seems normal to me
> with this kind of engine Five seconds after the engine has fired up
> there is no smoke at all...

Once had the same symptoms with an engine which the oil level was too high.
What can I say, I was in my youth.

Lee D

 

R

Ralph A. Schmid, DK5RAS

Guest

• Dec 6, 2004

• #5

"Lee_D" <[email protected]> wrote:

>Once had the same symptoms with an engine which the oil level was too high.
>What can I say, I was in my youth.

Well, the level is in the middle of the correct range on the dipstick,
and we had this effect before and after changing the oil, with the
correct amount of approx. 6.5l.



regards - Ralph

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R

R L Driver

Guest

• Dec 6, 2004

• #6

"Ralph A. Schmid, DK5RAS" <[email protected]> wrote in message
news:[email protected]...
> Hi,
>
> everyone seems to talk about clouds of smoke today, so I will add one
> to this
>
> When driving down a hill with the engine supporting the brakes, our
> Defender 90 starts to exhaust smoke. Engine is a 2.5 td. Normal
> behaviour, or do we have to worry? Everything else is normal, no
> coolant loss, no oil loss, no smoke during normal travel. Just when
> cranking the engine it also smokes, but this really seems normal to me
> with this kind of engine Five seconds after the engine has fired up
> there is no smoke at all...
>
> I live up a hill and every morning rolling down the hill on the overrun
the engine smokes , as soon as you put your foot down the exhaust clears.
So I guess its normal ...... non turbo 2.2 diesel uses no oil between
changes

steve the grease
>
>

 

R

Ralph A. Schmid, DK5RAS

Guest

• Dec 7, 2004

• #7

"R L Driver" <[email protected]> wrote:

>the engine smokes , as soon as you put your foot down the exhaust clears.

Yes, exactly.

>So I guess its normal ...... non turbo 2.2 diesel uses no oil between
>changes

Our 2.5TD also uses no or almost no oil. More and more I think, this
behaviour is nothing to worry. I will keep an eye on it.



regards - Ralph

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