Thread: td5 breathing and oil leak

Has it had a decent run loaded up lately or just short trips?
Maybe its just glazed up a bit and needs a decent flogging to sort it out.

If you think its the provent blocked then what about pulling the filter out and starting it to see if its still breathing as heavily?

FWIW - The provent in my County (4bd1) has been in since April, done about 7000 kms and is definitely wet and returning oil for the last 2000 or so. Different engine I know but.....

Steve

Thanks for the info Steve, different engine, same principle.

OK i have had a further look taking pipes etc off and found the following.

1, breather from engine to provent - semi blocked with oil as it dips down in the middle and back up to provent - cant put provent any lower but can replace the pipe (means removing acoustic cover)

2, blowing down the engine breather through the provent is fairly hard with the filter in place. Still not free flowing when the filter is removed.

3, removed provent to turbo pipe and thats free flowing and fairly dry, still some oil coming past but nothing major (fine coating) trying to suck through this isnt easy with or without filter.

4, take the provent lid off and its all free flowing.

5, if the engine cant breath because the provent is so restrictive then thats the reason it has breached the rocker gasket.

6, i started the disco td5 we also have and ran it on idle for a while. With the oil cap off it breathes smoke also (not as much but it has no provent so breathes into the inlet freely)

So... provent experts.. apart from the obvious misinstall of the provent (not having the breather running down to the provent, which is almost impossible) is there anything in the provent that can still restrict flow after the filter is out.

Im annoyed as its doing its job, but causing problems elsewhere as the gasket was new into the engine in may.

Anyone else encountered this?

Cant have it spilling this much oil over the drive!

Steve

Steve
Its VERY COMMON for the Td5 rocker cover to leak on the "D" section at the rear.
I think you may be worrying about little,a new gasket should fix it.
Done 3 on my D2,Deefer needs doing,it was leaking prior to ProVent instal.
Andrew

Originally Posted by LandyAndy

Steve
Its VERY COMMON for the Td5 rocker cover to leak on the "D" section at the rear.
I think you may be worrying about little,a new gasket should fix it.
Done 3 on my D2,Deefer needs doing,it was leaking prior to ProVent instal.
Andrew

Hi Andy

Yeah i know its common which i why i'm particularly careful when installing them I have done 2 on the d2 and this is the second on the deefer only fitted in May. having said that.. it is me doing it!

Could you (if you have chance) see if your provent is free flowing air wise.. mine really takes some blowing to get air through it.. and i'm sure that seal isnt designed for that kind of pressure.

By the way.. genuine or 3rd party seals? Sealant or not? (i know it has to go in the corner of the "d")

Steve

Hi Steve
Both my Provents are breathing freely.They do have a relief valve in the lid that should vent before it builds enough pressure to blow a gasket.
Andrew

well i spent 2 1/2 hours yesterday redoing the gasket!

(to anyone thinking they are smarter than the mfr and uses sealant to 'finally stop any leaks' DONT it takes forever to scrape it all off!)

Anyway... been out for a run in it today, got back... and the damn thing is still leaking and chuffing its breathing gas out of the rear of the gasket (unless the cam carrier block is leaking?)

as far as i can see it HAS to be the provent restricting the flow. if i take the filter out and put the lid on... the 'breathing' stops..

strangely tho with the filter in but still the lid off it causes it to smoke out the gasket again.. something very strange going on.

Can anyone confirm that a hot TD5 does actually seem to smoke quite a bit out of the oil filler cap, our disco does as well, so i'm thinking its normal.

So Any provent experts here? anyone that can offer some advice as to what may be causing it

I'm gonna get a new provent filter, but if its blocked already after 6000k's then its gonna be cheaper to strip the intercooler out every 12 months and flush it out as they cost $73 each..

Thanks

Steve

Got the right RC gasket? the half moon shaped bit at the rear comes in two different sizes (which I guess may change if you change the head and 'the bit that bolts on top of the head' from the original for the vehicle?). And LR states that sealant MUST be used at the rear. Make sure the sealant doesn't get down into the oilway just in front of the half-moon shaped cut-out (between it and the back of the camshaft cradle thing, hard to see, may need unblocking with some tie-wire etc).
And some TD5 are bit blowy. Mine spat the front bung out the other day from the camshaft which was probably added to by my Provent. Changed my filter and bunged the bung back with some sealant. All good. But what you are describing sounds like a straight out leak, Provent or not.

Thanks davros

I have done a few of these and always done then by the book, apart from the last one.

I changed the provent filter out and the issue has gone away. They definitly add pressure when saturated.

I have been talking to Mann about the issue and they want to have a look at the filter. I have sent it off and have to wait for germany to analyse it.

I'm not so sure it is the rocker gasket now and have a new rear cam seal to put in also.

The leak has gone with the new filter but i can replicate it by pinching the breather hose.

I'll update when I know more!

Steve