discovery ticking noise

I have a 1994 300 tdi with a strange ticking noise

The noise only happens above 2500 revs and only when the engine is
under load such as accelerating, hill climbing etc.

I have replaced the front pipe and manifold gasket.
Removed the exhaust manifold to check for leaks.

I noticed there seems to be oil leaking from the oil filter housing
area. Is it possible that some oil pressure valve is defective and
leaking here? It was certainly way overfilled with oil when I bought
it.

Thanks
K

In article <[email protected]>, Dstl Web Team
<[email protected]> writes
>I have a 1994 300 tdi with a strange ticking noise
>
>The noise only happens above 2500 revs and only when the engine is
>under load such as accelerating, hill climbing etc.
>I noticed there seems to be oil leaking from the oil filter housing
>area. Is it possible that some oil pressure valve is defective and
>leaking here? It was certainly way overfilled with oil when I bought
>it.


It could be the head gasket blowing out of the back of the block sounds
just like the manifold gasket has gone.

Listen using a bit of tube around that area and follow the noise.
I have had customers do thousands of miles with it making a noise like
that. Would be a good idea to have the head skimmed when you change the
gasket just to make sure. Not the end of the world.


The brake vacuum pump can start to fail and that gives a very load
ticking noise. as you look from the drivers (RHD) side and look at the
engine it is just to the rear of the oil filter. Black in colour with
WABCO on a small plate. it can also leak oil once it gets to this state.
The only cure is to replace it. fiddley but only a five min job.

Don't get one from Landrover as the are stupidly expensive. they are
only made by WABCO so the cheep parts places won't sell you an inferior
make. Still a few quid though !

So make sure it is that that is your problem. But if it is leaking oil
that is a good reason for changing it, as they have a habit of suddenly
pumping all your oil out of the side of the block.

Hope this helps
--
Marc Draper

Forsale

Landrover Defender 90 300tdi county hardtop 1996 72K
Landrover Discovery comercial 300tdi S reg 70k
Landrover Discovery Comercial 300tdi R reg 62k
Toyota Hilux surf 2.4 AW/AC/EW/SR

Super winch X9 + genuine Landrover fitting kits for 200 Disco.

Marc

Thanks for this. The cylinder head was replaced a year ago under
warranty so I'd like to avoid another dismantling visit to that side
of things.

The info about the brake vacuum pump is interesting though. One other
thing. IT only makes the noise when normal running temperature or
close to it is reached. This is what made me think exhaust components.
Do you still think it could be the brake vacuum pump? If it is fed by
oil then would it tick as oil temperature increased?

In engine runs very well with loads of power.

Thanks

On Thu, 26 Aug 2004 09:47:37 +0100, marc <[email protected]>
wrote:

>In article <[email protected]>, Dstl Web Team
><[email protected]> writes
>>I have a 1994 300 tdi with a strange ticking noise
>>
>>The noise only happens above 2500 revs and only when the engine is
>>under load such as accelerating, hill climbing etc.
>>I noticed there seems to be oil leaking from the oil filter housing
>>area. Is it possible that some oil pressure valve is defective and
>>leaking here? It was certainly way overfilled with oil when I bought
>>it.
>
>
>It could be the head gasket blowing out of the back of the block sounds
>just like the manifold gasket has gone.
>
>Listen using a bit of tube around that area and follow the noise.
>I have had customers do thousands of miles with it making a noise like
>that. Would be a good idea to have the head skimmed when you change the
>gasket just to make sure. Not the end of the world.
>
>
>The brake vacuum pump can start to fail and that gives a very load
>ticking noise. as you look from the drivers (RHD) side and look at the
>engine it is just to the rear of the oil filter. Black in colour with
>WABCO on a small plate. it can also leak oil once it gets to this state.
>The only cure is to replace it. fiddley but only a five min job.
>
>Don't get one from Landrover as the are stupidly expensive. they are
>only made by WABCO so the cheep parts places won't sell you an inferior
>make. Still a few quid though !
>
>So make sure it is that that is your problem. But if it is leaking oil
>that is a good reason for changing it, as they have a habit of suddenly
>pumping all your oil out of the side of the block.
>
>Hope this helps
>--
>Marc Draper
>
>Forsale
>
>Landrover Defender 90 300tdi county hardtop 1996 72K
>Landrover Discovery comercial 300tdi S reg 70k
>Landrover Discovery Comercial 300tdi R reg 62k
>Toyota Hilux surf 2.4 AW/AC/EW/SR
>
>Super winch X9 + genuine Landrover fitting kits for 200 Disco.

In article <[email protected]>, Austin Shackles wrote:
>
> beware, it'll eventually stop pumping. That's what happened to ours. disco
> takes a hefty right foot to stop without a servo.
>

Hmm. I imagine that the 110 would take a hefty push on the pedal too. From
what the local guy said I was under the impression they just got unbearably
noisy, not that they packed up completely.

Think I'll look into a replacement soon...

--
simon at sbarr dot demon dot co dot uk
Simon Barr.
'97 110 300Tdi.

Thing is, would it be the vacuum pump if the ticking noise is only
heard when.

1 Normal temperture has been reached
2 Between 2100 and 2600 revs only.
3 Only when the engine is under load. Accelerating.Hill climbing.

Thanks

On 6 Sep 2004 11:02:06 GMT, Simon Barr <[email protected]> wrote:

>In article <[email protected]>, Austin Shackles wrote:
>>
>> beware, it'll eventually stop pumping. That's what happened to ours. disco
>> takes a hefty right foot to stop without a servo.
>>
>
>Hmm. I imagine that the 110 would take a hefty push on the pedal too. From
>what the local guy said I was under the impression they just got unbearably
>noisy, not that they packed up completely.
>
>Think I'll look into a replacement soon...
>
>--
> simon at sbarr dot demon dot co dot uk
>Simon Barr.
>'97 110 300Tdi.

In article <[email protected]>, Dstl Web Team wrote:
> Thing is, would it be the vacuum pump if the ticking noise is only
> heard when.
>
> 1 Normal temperture has been reached
> 2 Between 2100 and 2600 revs only.
> 3 Only when the engine is under load. Accelerating.Hill climbing.
>
> Thanks
>

I'd have though not. Mine seems to make a noise all the time, hot or cold.

Try using a short broomstick or similar and rest it on parts of the engine
with someone...

Aah, scrap that, it's only under load isn't it? Could it be the exhaust
or manifold blowing. When under full power I guess there would be more
pressure so thats when it blows?

--
simon at sbarr dot demon dot co dot uk
Simon Barr.
'97 110 300Tdi.

On or around 6 Sep 2004 11:02:06 GMT, Simon Barr <[email protected]>
enlightened us thusly:

>In article <[email protected]>, Austin Shackles wrote:
>>
>> beware, it'll eventually stop pumping. That's what happened to ours. disco
>> takes a hefty right foot to stop without a servo.
>>
>
>Hmm. I imagine that the 110 would take a hefty push on the pedal too. From
>what the local guy said I was under the impression they just got unbearably
>noisy, not that they packed up completely.
>
>Think I'll look into a replacement soon...

ours didn't tick, or not that I was aware of. It leaked oil slightly and
after a bit stopped pumping.

On or around 6 Sep 2004 12:06:04 GMT, Simon Barr <[email protected]>
enlightened us thusly:
>
>Aah, scrap that, it's only under load isn't it? Could it be the exhaust
>or manifold blowing. When under full power I guess there would be more
>pressure so thats when it blows?

I've been fooled by that in the past.

Dstl Web Team wrote:

> Thing is, would it be the vacuum pump if the ticking noise is only
> heard when.
>
> 1 Normal temperture has been reached
> 2 Between 2100 and 2600 revs only.
> 3 Only when the engine is under load. Accelerating.Hill climbing.

Gut feel says cracked exhaust manifold, or possibly a the head to
manifold gasket starting to blow. Start it up, get it warm, and use a
short length of plastic hose to listen for the leak.


--
EMB
change two to number to reply

Thanks for your suggestions.

Replaced manifold to head gasket over a week ago
Replaced front pipe and matching manifold gasket as flexible pipe
suspected.

As I said, it's had a new cylinder head from Turner engineering last
year. Started ticking earlier this year. If the head gasket has gone
would it tick and still drive ok? Because it certainly pulls well (for
a 300tdi anyway).

On Mon, 06 Sep 2004 18:14:14 +0100, Austin Shackles
<[email protected]> wrote:

>On or around 6 Sep 2004 11:02:06 GMT, Simon Barr <[email protected]>
>enlightened us thusly:
>
>>In article <[email protected]>, Austin Shackles wrote:
>>>
>>> beware, it'll eventually stop pumping. That's what happened to ours. disco
>>> takes a hefty right foot to stop without a servo.
>>>
>>
>>Hmm. I imagine that the 110 would take a hefty push on the pedal too. From
>>what the local guy said I was under the impression they just got unbearably
>>noisy, not that they packed up completely.
>>
>>Think I'll look into a replacement soon...
>
>ours didn't tick, or not that I was aware of. It leaked oil slightly and
>after a bit stopped pumping.
>