nobber · Feb 5, 2018

This is proper peeing me off now, I changed the fuel filter a week or so ago, every now and then it struggled to start, now its every time, I had a look and the filter was damp at the bottom, Ive reseated it a few times, tightened the bejesus out of it, still wont seal at the bottom! Have I got a misshapen fuel filter? Any one ever had this problem? All the seals were new and the filter is a genuine LR , well , its a Delphi that came in a LR box. Its defo the right filter.

Turboman · Feb 5, 2018

nobber said:
This is proper peeing me off now, I changed the fuel filter a week or so ago, every now and then it struggled to start, now its every time, I had a look and the filter was damp at the bottom, Ive reseated it a few times, tightened the bejesus out of it, still wont seal at the bottom! Have I got a misshapen fuel filter? Any one ever had this problem? All the seals were new and the filter is a genuine LR , well , its a Delphi that came in a LR box. Its defo the right filter.

Take it you checked in the filter head for old rings before fitting the new ones?
And cleaned out all the seatings for the rings likewise.
Never had a genuine one leak as far as I can remember. Is it running down from a bad copper washer at the top, maybe on the bleed screw?

nobber · Feb 5, 2018

Nope , defo the bottom, its all been cleaned, old seals removed, Ive never had anything like this happen before, its always been good as gold on filter changes. I think I will have to try a new filter and see how that goes.

Turboman · Feb 5, 2018

nobber said:
Nope , defo the bottom, its all been cleaned, old seals removed, Ive never had anything like this happen before, its always been good as gold on filter changes. I think I will have to try a new filter and see how that goes.

Do you think the thread in the base might be worn, so it isn't pulling up properly on the filter? They are only made of alloy.

nobber · Feb 5, 2018

No, its creaking its so tight, ive nipped it up a little more and put talk over the whole filter head so that should show up any weeping and where its coming from, I will give it a few hours then check again.

The thing is this morning it just wouldn't kick, I ended up with a flat battery. I charged the battery and it cranked for ages before starting, when it did start there was a lot of white unburnt fuel smoke.
I eventually got to work then tried it again at 12.30 lunch time, same thing , cranked for ages then a huge bellow of unburnt fuel smoke when it kicked in, the same thing at 4.30 on my way home.
The thing that is throwing me is the clouds of white fuel smoke, I am wondering if my glow plug relay or my plugs are shot and the weeping filter is a red herring. Ive got some clear pipe on the leak off so I will get the missus to turn it over later and look at that to see if there is actually air in the fuel system.

Turboman · Feb 5, 2018

nobber said:
No, its creaking its so tight, ive nipped it up a little more and put talk over the whole filter head so that should show up any weeping and where its coming from, I will give it a few hours then check again.

The thing is this morning it just wouldn't kick, I ended up with a flat battery. I charged the battery and it cranked for ages before starting, when it did start there was a lot of white unburnt fuel smoke.
I eventually got to work then tried it again at 12.30 lunch time, same thing , cranked for ages then a huge bellow of unburnt fuel smoke when it kicked in, the same thing at 4.30 on my way home.
The thing that is throwing me is the clouds of white fuel smoke, I am wondering if my glow plug relay or my plugs are shot and the weeping filter is a red herring. Ive got some clear pipe on the leak off so I will get the missus to turn it over later and look at that to see if there is actually air in the fuel system.

Take it you have bled the pump too, and got someone to loosen an injector union while you spin over?

nobber · Feb 5, 2018

Didn't have to , after the filter change I bled the filter and it fired up more or less instantly, it drove OK for nearly a week before this started to happen.

Turboman · Feb 5, 2018

nobber said:
Didn't have to , after the filter change I bled the filter and it fired up more or less instantly, it drove OK for nearly a week before this started to happen.

OK. Can't see any options but another filter, then. Keep us posted what happens.

nobber · Feb 5, 2018

Will do , I'm going to check the glow plugs as well , they are years and years old as is the relay so they are suspect anyway.

Discokids · Feb 5, 2018

I've got a spare disco 300tdi filter thingy if you want to go down that route.

Turboman · Feb 5, 2018

Discokids said:
I've got a spare disco 300tdi filter thingy if you want to go down that route.

Very expensive elements compared to original.

Discokids · Feb 5, 2018

Turboman said:
Very expensive elements compared to original.

I've never looked, wonder why that is?

jamesmartin · Feb 5, 2018

nobber said:
No, its creaking its so tight, ive nipped it up a little more and put talk over the whole filter head so that should show up any weeping and where its coming from, I will give it a few hours then check again.

The thing is this morning it just wouldn't kick, I ended up with a flat battery. I charged the battery and it cranked for ages before starting, when it did start there was a lot of white unburnt fuel smoke.
I eventually got to work then tried it again at 12.30 lunch time, same thing , cranked for ages then a huge bellow of unburnt fuel smoke when it kicked in, the same thing at 4.30 on my way home.
The thing that is throwing me is the clouds of white fuel smoke, I am wondering if my glow plug relay or my plugs are shot and the weeping filter is a red herring. Ive got some clear pipe on the leak off so I will get the missus to turn it over later and look at that to see if there is actually air in the fuel system.

air as well as glow plugs would give unburnt fuel from exhaust as would any start needing a few turnovers

nobber · Feb 5, 2018

I have just been out and started it, it took quite a few cranks but it started much easier than earlier today, couldn't see any fuel in the talc so hopefully nipping up the filter has sorted it. The missus is in bed so I cant get a look at the pipe as its cranking but it looks clear of air.
James if there was air and fuel to cause the unburnt fuel smoke surely it would have coughed when cranking? It didn't, not a dickey bird from it.

nobber · Feb 5, 2018

Discokids said:
I've got a spare disco 300tdi filter thingy if you want to go down that route.

Thanks for the offer buddy but I wouldn't know where to start with that.

Turboman · Feb 6, 2018

Discokids said:
I've never looked, wonder why that is?

Because it is a big filter in a can, instead of a paper element in a metal sleeve.

And due to the massive volume of manufacture of the 296 filter elements. They are used on engines all over the world, and have been for over 50 years.
Not just Landrovers, tractors, generators, boats, you name it.

nobber · Feb 6, 2018

So its not the filter, it stayed dry, still not starting properly.
I had a look under it today at lunch time, diesel is leaking from the disc shaped thing under the pump, is this the auto advance for cold starting? Its not the turbo diaphragm, its the one on the bottom of the pump.
There doesn't seem to be any diesel coming down the body of the pump so my guess is its this disc shaped thing. I have cleaned it all down with brake cleaner and a tooth brush and once it dries I will periodically check it to see where the leak is coming from.
At lunch time today I had diesel all over the front axles final drive casing so the pump does seem to be emptying itself. I bled the pump at home time by loosening the bleed screw then priming the pump lever and finally cranking it over to get fuel out of the bleed nipple, and it started normally, just a couple of cranks with the nipple closed.

Turboman · Feb 6, 2018

nobber said:
So its not the filter, it stayed dry, still not starting properly.
I had a look under it today at lunch time, diesel is leaking from the disc shaped thing under the pump, is this the auto advance for cold starting? Its not the turbo diaphragm, its the one on the bottom of the pump.
There doesn't seem to be any diesel coming down the body of the pump so my guess is its this disc shaped thing. I have cleaned it all down with brake cleaner and a tooth brush and once it dries I will periodically check it to see where the leak is coming from.
At lunch time today I had diesel all over the front axles final drive casing so the pump does seem to be emptying itself. I bled the pump at home time by loosening the bleed screw then priming the pump lever and finally cranking it over to get fuel out of the bleed nipple, and it started normally, just a couple of cranks with the nipple closed.

That sounds like a leak on the pump, as you say. TBH, It has been a long, cold day, and I can't remember what the round bit does. And my pump manuals are in Cornwall.

James may know what the round bit does, and if it is fixable at home.

Can you take it into a good injection specialist for diagnosis?
Out if interest, do you know approximately how many miles the pump has done?

nobber · Feb 6, 2018

The pump is an unknown, but my guess is lots. The old girl is my only form of transport and I live in the sticks so its a daily drive to work, so I need to bear it until the week end then have a close look with some spanners.
From what I gather it unscrews and there is a couple of O rings in there, but once its dry I will know more about where the leak is coming from.

Turboman · Feb 6, 2018

nobber said:
The pump is an unknown, but my guess is lots. The old girl is my only form of transport and I live in the sticks so its a daily drive to work, so I need to bear it until the week end then have a close look with some spanners.
From what I gather it unscrews and there is a couple of O rings in there, but once its dry I will know more about where the leak is coming from.

Take it you haven't got another working pump?

As you probably know, clinical clean if you open the pump. Grit in em knacks em.

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