Oil out of dipstick (300 TDI) - Defender Source
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  #1  
Old December 11th, 2015, 01:31 PM
McMike_Defender
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Oil out of dipstick (300 TDI)

Dear Landies,

I have my Land Rover Defender 300TDI from 1995 that I bought some months ago that requires a bit of your expertise to run properly. The car has 370.000 km on the clock, and when I bought it was quite in bad shape both in engine and body.

I have fitted:
  • New turbo
    New head
    New head gasket
    New piston rings
    Rebored the cylinders
    New STD cylinder sleeves
    Resized the crank and fitted +30 main and con bearings
    New cam followers
    New injector nozzles (+ serviced the pump)
    New fuel pump
Probably more things that I now forget as well...

After doing such rebuild, there is some sort of problem in the engine, as when the temperature gauge reaches normal operating temperature and I open the dipstick, oil is sprinkling from the dipstick tube...

Can anyone give me a clue of what could be the problem?

Thanks in advance

Mike
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  #2  
Old December 11th, 2015, 01:40 PM
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John B.
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Are all the crankcase ventilation components installed and not plugged?

Is the oil level correct? Dipstick tube inserted the proper distance?
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Old December 11th, 2015, 01:44 PM
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Oops, editing to defer to Red90.
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  #4  
Old December 11th, 2015, 01:48 PM
McMike_Defender
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Quote:
Originally Posted by Red90 View Post
Are all the crankcase ventilation components installed and not plugged?

Is the oil level correct? Dipstick tube inserted the proper distance?
The level is corret, dipstick tube is inserted at proper distance. About crankcase I will recheck tomorrow morning with our guys at the workshop, we just re-rebuilt again today.
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  #5  
Old December 11th, 2015, 04:05 PM
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Jeff Labbé
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Hope for you the crankcase ventilation is not proper fit or plugged..,,
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Old December 11th, 2015, 05:15 PM
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Is the oil leaking from the base of the dipstick tube where it meets the engine block, or at the very top (opening)?
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Old December 11th, 2015, 05:54 PM
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With the truck running and the dipstick removed put your thumb over the end of the dipstick tube, is there pressure rushing out @ idle ?
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Old December 11th, 2015, 10:35 PM
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Quote:
Originally Posted by sonoronos View Post
Is the oil leaking from the base of the dipstick tube where it meets the engine block, or at the very top (opening)?
From the very top.

------ Follow up post added December 12th, 2015 06:36 AM ------

Quote:
Originally Posted by Uncle Douglas View Post
With the truck running and the dipstick removed put your thumb over the end of the dipstick tube, is there pressure rushing out @ idle ?
Exactly, when it is at operating temperature, if you remove the disptick, you can see oil sparkling out of the tube (not in big amounts, but it sparkles)
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Old December 11th, 2015, 10:41 PM
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That is blow by.

Ie pressure getting past your rings. If you just rebuilt this engine something is wrong, perhaps the gaps in the rings aren't 180 degree's opposed or perhaps a compression ring might have broken when the piston was reinstalled. You say the cylinders have new liners and the pistons are new so if the piston to bore clearance is correct that leaves your rings as the culprit
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  #10  
Old December 11th, 2015, 10:47 PM
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The pcv system should handle all but huge blow by. Take the oil filler cap off and put your hand over the hole. You should feel suction.

If not check that the pcv system is clear.
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  #11  
Old December 12th, 2015, 12:53 AM
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I just had a chat with my guys and there is an interesting situation now...

They have removed the PCV valve and the pipes. They have checked and there is no blockage nor pipes are collapsed. All is OK and when testing it looks good. When it is all connected, the problem persists. However, if they remove the pipe from the upper inlet, then the problem finishes.

Any ideas how can this happen?
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  #12  
Old December 15th, 2015, 01:25 AM
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So...what is the other end of the pcv upper inlet pipe connected to?
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  #13  
Old January 28th, 2016, 01:32 PM
McMike_Defender
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Hi again,

Now after removing all from engine again and fitting it back, problem persists. We have done following things lately:

*New PCV/Cyclone
*Bought new con-rod arms
*Fitted new head gasket
*Fitted new piston rings

However, engine still blows up through dipstick tube.

I had the best Landie specialists available at Arusha (Tanzania) to check it and they have never ever seen a case like this... the specialist has said they have run compression tests and all seems to be ok...

Anyone has any clue?

Mike
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  #14  
Old January 28th, 2016, 02:39 PM
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Quote:
Originally Posted by McMike_Defender View Post
Hi again,

Now after removing all from engine again and fitting it back, problem persists. We have done following things lately:

*New PCV/Cyclone
*Bought new con-rod arms
*Fitted new head gasket
*Fitted new piston rings

However, engine still blows up through dipstick tube.

I had the best Landie specialists available at Arusha (Tanzania) to check it and they have never ever seen a case like this... the specialist has said they have run compression tests and all seems to be ok...

Anyone has any clue?

Mike

blockage in the drain hose from cyclone to sump? Almost seems like normal blowby pressurization for a health engine in the sump has nowhere to go except out the tube.
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  #15  
Old January 28th, 2016, 03:23 PM
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You might try capping your vacuum pump off and see if that changes anything.
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  #16  
Old January 4th, 2017, 06:32 PM
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Hello McMike, any solution?
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