Pressurized sump 300Tdi

I've noticed my 300Tdi Disco seems to be running a bit rough on tickover.
If it were a petrol engine you'd swear it was missing on one cylinder. Seems
fine at other engine speeds.

On further investigation I've found the sump to be pressurizing.Take out the
dip stick and there is white smoke chuffing out. Also the same white smoke
coming from the oil filler.
There is no oil in the coolant and no sign of water in the oil.
The exhaust has no signs of either oil or water vapour.
Oil and water levels have remained constant.

I suspect either a broken compression ring or maybe a cracked piston.

Any suggestions from the group would be most welcome.
The engine's done about 155,000 Kms has been serviced at 5000 Kms intervals
and driven conservatively.
--
Simon Mills

98 Disco Tdi auto

Simon Mills wrote:
>
> I suspect either a broken compression ring or maybe a cracked piston.

And I'll second that.

--
EMB

> Any suggestions from the group would be most welcome.
> The engine's done about 155,000 Kms has been serviced at 5000 Kms
intervals
> and driven conservatively.


I disagree and would put my money on the head gasket has gone.

It will even guess that it has blown between number four piston and number 8
pushrod hole. (will have no effect on the cooling system.)

Be warned that running it like that could cause oil mist to find its way
into the inlet manifold via the breather system and the engine will rev out
of control and drink all its oil. The only way to stop it is to stall it
(difficult with an auto).

I have seen loads of head gaskets on 200 & 300 Tdis fail like this. A quick
head gasket swap and it will be fine. Alot cheeper than pulling the pistons
out.

Good luck and let us know how you get on.



--
Marc

FOR SALE : DISCOVERY II (02) SERENGETTI 7SEAT 39,000 MILES FSH
DISCOVERY II (51) GS7, ACE, SLS, CLIMATE,67,000 MILES
B.F.G AT'S
DISCOVERY TDI R REG EPSOM GREEN, 7SEATS, AC, AW.
DISCOVERY TDI M REG VAN 100,000 MILES.

On or around Mon, 28 Feb 2005 20:21:26 -0000, "Marc Draper"
<[email protected]> enlightened us thusly:

>Be warned that running it like that could cause oil mist to find its way
>into the inlet manifold via the breather system and the engine will rev out
>of control and drink all its oil. The only way to stop it is to stall it
>(difficult with an auto).

not quite - if you can get at the air intake you can block it, and I dare
say flooding the intake with CO2 from a CO2 fire extinguisher would put the
fire out as well, though that means having it to hand.

>I have seen loads of head gaskets on 200 & 300 Tdis fail like this. A quick
>head gasket swap and it will be fine. Alot cheeper than pulling the pistons
>out.

head-lift will settle it one way or the other.
--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"If you cannot mould yourself as you would wish, how can you expect
other people to be entirely to your liking?"
Thomas À Kempis (1380 - 1471) Imitation of Christ, I.xvi.

> not quite - if you can get at the air intake you can block it, and I dare
> say flooding the intake with CO2 from a CO2 fire extinguisher would put
the
> fire out as well, though that means having it to hand.


Come on Austin !

You are doing 50 mph down the motorway your engine starts to race....so you
stop...open the bonnet, and being the disco the bonnet pull in on the wrong
side, you then grab the fire extinguisher from its hiding place and try to
fire it at the front wheel in a hope that it will find its way into the air
intake !!! A disco engine only holds 6.9 L of oil I think it would have
guzzled all of that and stopped itself buy the time you where fumbling with
the pin on the fire extinguisher. ;-)

You could always drive it into handy lake that would stop it !!

I had a customer who had this happen on the M4 last year she pulled up on
the hard shoulder got out and stood and watched untill it stopped. I put a
head gasket on it and it has been fine ever since. probably added a few
thousand miles to the engine in a only few seconds. Was very surprised that
it sounded so sweet after.


--
Marc

FOR SALE : DISCOVERY II (02) SERENGETTI 7SEAT 39,000 MILES FSH
DISCOVERY II (51) GS7, ACE, SLS, CLIMATE,67,000 MILES
B.F.G AT'S
DISCOVERY TDI R REG EPSOM GREEN, 7SEATS, AC, AW.
DISCOVERY TDI M REG VAN 100,000 MILES.

Austin wrote;
head-lift will settle it one way or the other.
--

I'm taking the car to Ritters ( Landy specialist) in Melbourne tomorrow.

I hope it is just a head gasket Marc. I've had figures of up to $4000 Aust.
if they find a lot of damage.

Thought I'd get the timing belt done while it is in there.55000 klms. since
the last change.


--
Simon Mills

98 Disco Tdi auto

> I hope it is just a head gasket Marc. I've had figures of up to $4000
Aust.
> if they find a lot of damage.
>
> Thought I'd get the timing belt done while it is in there.55000 klms.
since
> the last change.

Good luck. Ask to see the head gasket when they take it off.