Advice please - Engine breather passing oil to air filter?

I have a 1998 defender with a 2.5 TD engine. The breather on the oil
filler keeps running oil into my air filter. I have cleaned out the
filler cap on a number of occasions, and still the problem persists.

I believe that this is a normal problem, so I am after advice on
disconnecting the breather pipe from the air filter, is it ok to just
block the pipe off etc.???

Any advice greatly appreciated.

Andy

[email protected] (Andy Seymour) wrote in message news:<[email protected]>...
> I have a 1998 defender with a 2.5 TD engine. The breather on the oil
> filler keeps running oil into my air filter. I have cleaned out the
> filler cap on a number of occasions, and still the problem persists.
>
> I believe that this is a normal problem, so I am after advice on
> disconnecting the breather pipe from the air filter, is it ok to just
> block the pipe off etc.???
>
> Any advice greatly appreciated.
>
> Andy

Sorry, loosing the plot, it's a 1988 defender (really a 90), not 1998 (I wish)

Andy Seymour wrote:

> I have a 1998 defender with a 2.5 TD engine. The breather on the oil
> filler keeps running oil into my air filter. I have cleaned out the
> filler cap on a number of occasions, and still the problem persists.
>
> I believe that this is a normal problem, so I am after advice on
> disconnecting the breather pipe from the air filter, is it ok to just
> block the pipe off etc.???
>
> Any advice greatly appreciated.
>
> Andy

This is indicative of worn piston rings allowing compression past the
pistons. Blocking off the breather will result in oil being forced past
seals.
JD

Sorry...Bad piston rings. You can do a compression test to narrow it down to
a particular cylinder...but that would be a waste of time because you will
ultimately have to replace the rings and hone out the bores.

Good luck!


"Andy Seymour" <[email protected]> wrote in message
news:[email protected]...
> I have a 1998 defender with a 2.5 TD engine. The breather on the oil
> filler keeps running oil into my air filter. I have cleaned out the
> filler cap on a number of occasions, and still the problem persists.
>
> I believe that this is a normal problem, so I am after advice on
> disconnecting the breather pipe from the air filter, is it ok to just
> block the pipe off etc.???
>
> Any advice greatly appreciated.
>
> Andy

[email protected] (Andy Seymour) wrote in message news:<[email protected]>...
> I have a 1998 defender with a 2.5 TD engine. The breather on the oil
> filler keeps running oil into my air filter. I have cleaned out the
> filler cap on a number of occasions, and still the problem persists.
>
> I believe that this is a normal problem, so I am after advice on
> disconnecting the breather pipe from the air filter, is it ok to just
> block the pipe off etc.???
>
> Any advice greatly appreciated.
>
> Andy

Hi Andy,

I wouldn't block the pipe off as the pressure in the crankcase will
just find another outlet, ie a seal or someting, you can do as I did
and just pull it off and put a little plastic bottle on the end to see
how much oil is being chucked out. I think the proper term is "piston
blow-by". Which means, as the other guys correctly said is knackered
rings meaning the crankcase is being pressurised by the combustion
process.

Its an easy enough, although time consuming job to fix though if you
can budget for a set of rings and the labour to have the bores
rehoned. Only gets complicated if the pistons need renewing. Change
the shells while you're in there (seeing as you have to take the
pistons out anyway) and you'll have an engine that will last you many
many years.

These are good little engines, very torquey and much maligned. If it's
any consolation I ran my TD with the same problem for about two years
with the breather off and would have gone the piston ring/rehone route
if I hadn't come by a Tdi.

Hope this helps

Dave

On or around 19 Sep 2004 09:09:44 -0700, [email protected] (Dave Reynolds)
enlightened us thusly:

>much maligned

for good reason, as they tended to self-destruct. Mind, often due to
missing or inadequate maintenance, but the fact remains that few got to 100K
miles, from what I hear.

....cue about 27 people with TDs at astronomical mileage.

Austin Shackles <[email protected]> wrote in message news:<[email protected]>...
> On or around 19 Sep 2004 09:09:44 -0700, [email protected] (Dave Reynolds)
> enlightened us thusly:
>
> >much maligned
>
> for good reason, as they tended to self-destruct. Mind, often due to
> missing or inadequate maintenance, but the fact remains that few got to 100K
> miles, from what I hear.
>
> ...cue about 27 people with TDs at astronomical mileage.

From what i've heard alot of the early ones have either been blown
up/replaced but the later ones were much better comparitively. I took
mine out at 128000 miles and is due to go into another 90 very soon
once its had a bit of a "tickle"!

[email protected] (Dave Reynolds) wrote in message news:<[email protected]>...
> [email protected] (Andy Seymour) wrote in message news:<[email protected]>...
> > I have a 1998 defender with a 2.5 TD engine. The breather on the oil
> > filler keeps running oil into my air filter. I have cleaned out the
> > filler cap on a number of occasions, and still the problem persists.
> >
> > I believe that this is a normal problem, so I am after advice on
> > disconnecting the breather pipe from the air filter, is it ok to just
> > block the pipe off etc.???
> >
> > Any advice greatly appreciated.
> >
> > Andy
>
> Hi Andy,
>
> I wouldn't block the pipe off as the pressure in the crankcase will
> just find another outlet, ie a seal or someting, you can do as I did
> and just pull it off and put a little plastic bottle on the end to see
> how much oil is being chucked out. I think the proper term is "piston
> blow-by". Which means, as the other guys correctly said is knackered
> rings meaning the crankcase is being pressurised by the combustion
> process.
>
> Its an easy enough, although time consuming job to fix though if you
> can budget for a set of rings and the labour to have the bores
> rehoned. Only gets complicated if the pistons need renewing. Change
> the shells while you're in there (seeing as you have to take the
> pistons out anyway) and you'll have an engine that will last you many
> many years.
>
> These are good little engines, very torquey and much maligned. If it's
> any consolation I ran my TD with the same problem for about two years
> with the breather off and would have gone the piston ring/rehone route
> if I hadn't come by a Tdi.
>
> Hope this helps
>
> Dave


Dave,

Thanks for your reply, yes I was thinking along the lines of a bottle,
I will give that a go. When running and warm, its fine, and as you
said, great torque, plods along fine when of road, so I think I will
try and get away with it as long as possible. I am currently having
fun chasing fuel leaks, so I have plenty to keep me busy

Cheers again,

Andy

>
> Dave,
>
> Thanks for your reply, yes I was thinking along the lines of a bottle,
> I will give that a go. When running and warm, its fine, and as you
> said, great torque, plods along fine when of road, so I think I will
> try and get away with it as long as possible. I am currently having
> fun chasing fuel leaks, so I have plenty to keep me busy
>
> Cheers again,
>
> Andy

No worries, and if it does go bang i've got the old 2.5TD in the shed
if you need it!

Dave

[email protected] (Dave Reynolds) wrote in message news:<[email protected]>...
> >
> > Dave,
> >
> > Thanks for your reply, yes I was thinking along the lines of a bottle,
> > I will give that a go. When running and warm, its fine, and as you
> > said, great torque, plods along fine when of road, so I think I will
> > try and get away with it as long as possible. I am currently having
> > fun chasing fuel leaks, so I have plenty to keep me busy
> >
> > Cheers again,
> >
> > Andy
>
> No worries, and if it does go bang i've got the old 2.5TD in the shed
> if you need it!
>
> Dave

Dave,

cheers, but lets hope it doesnt come to that........ heh, heh, time will tell.

Andy