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D3 - Engine Bay Everything under the bonnet

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  #1  
Old 29th November 2017, 03:09 PM
snapdragon snapdragon is offline
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Default 3.0 TDi oil leak all over belts and pulleys

I had an oil leak all over the belts and pulleys a couple of months ago and it seemed worse around the tensioner damper. I replaced this and the belt and cleaned everything up. Quite a job removing bumper, bumperbar, lights pulling front forward front end etc,... Fast forward to now and same again.

It must be leaking somewhere else, definately engine oil, not steering fluid.
As soon as it goes on the belts it sprays everwhere so really difficult to find the source but I suspect the oil pressure sensor when pressure is high which is in the block on the drivers side front behind the electropneumatic device mounted on rubber bushings. I suspect this because after scrupilous cleaning I can't imaging how the oil got flung into the crevice that was clean last nigh but oily now.

Anyone else had this?
I will pick one up £8 on the way home from GSF - wish me luck.
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  #2  
Old 3rd December 2017, 07:19 PM
snapdragon snapdragon is offline
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Oil pressure switch didn't cure it.
I ran the car for 20 mins at 2000rpm and no leak, so thinking possible small turbo blow-by leak from a boost pipe or hose.
The leak seems to be a mist - I cleaned even more thoroughly and have put kitchen roll scrunched up in various places.

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Last edited by snapdragon; 23rd April 2020 at 08:18 AM.
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  #3  
Old 3rd December 2017, 08:30 PM
Mechcanico Lee Mechcanico Lee is offline
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Could you post up a random picture off the net of an engine out of the vehicle and put a pointer on where abouts you get think it’s coming from .
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  #4  
Old 28th January 2018, 04:06 PM
snapdragon snapdragon is offline
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Thanks ML, ongoing EPB issues and bad weather meant this was on the back burner.
Wow, what a mess, cleaned it all up again today and cleaned around the turbo, some seepage there but doubt it is migrating from there. Next I then covered in talcum powder, went for a run and the only traces of yellow oil so far are also places where it was bad before I cleaned it.

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Last edited by snapdragon; 23rd April 2020 at 08:18 AM.
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  #5  
Old 18th April 2018, 08:04 PM
snapdragon snapdragon is offline
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Took everything off within the V of the engine this week - fuel pipes, vacuum pipes, upper intake, lower intake and flaps, diesle injection pump, EGR, EGR cooler, oil filter housing, oil cooler, oil cooler mounting plate and oil separator - all down to a bare aluminium deck with machined holes for coolant and oil.
Cleaned it up and cleaned removed parts up and separated assemblies and replaced all gaskets and the PCV oil seperator. Jut putting the high pressure diesel pump on before the lower/upper intakes etc...

Next job will be to clean the front, replace oily belts, waterpump and power steering pump and A/C front bearing as there is a constant whine from one of them and replace the coolant and oil that gets contaminated when you do this job. Busy week so far but the weather has been good.

I think a garage would charger £1000s for this, I thank this forum for service manual PDFs!

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Last edited by snapdragon; 23rd April 2020 at 08:18 AM.
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  #6  
Old 20th April 2018, 12:13 AM
H-M3 H-M3 is offline
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Man I wish you took pics as you went along. But bravo to you
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